{"product_id":"map-sensor-881731-fits-mercruiser-mx-6-2-7-4-496-mag","title":"MAP Sensor 881731 – Fits MerCruiser MX 6.2\/7.4 \u0026 496 MAG","description":"\u003cdiv style=\"margin: 0 0 24px; padding: 24px; background: linear-gradient(135deg, #f5f8fb 0%, #ffffff 100%); border: 2px solid #0b3a63; border-left: 5px solid #0b3a63; border-radius: 12px; box-shadow: 0 4px 12px rgba(11, 58, 99, 0.08);\"\u003e\n  \u003ch2 style=\"margin: 0 0 16px; padding: 0; font-size: 24px; line-height: 1.3; font-weight: 700; color: #132238;\"\u003eHow to Match This Part\u003c\/h2\u003e\n  \u003cp style=\"margin: 0 0 14px; font-size: 16px; line-height: 1.6; color: #132238;\"\u003eThis aftermarket \u003cstrong style=\"font-weight: 700; color: #132238;\"\u003emanifold absolute pressure (MAP) sensor\u003c\/strong\u003e replaces MerCruiser \/ Mercury \u003cstrong style=\"font-weight: 700; color: #132238;\"\u003e881731\u003c\/strong\u003e, along with related numbers \u003cstrong style=\"font-weight: 700; color: #132238;\"\u003e861249A1\u003c\/strong\u003e and \u003cstrong style=\"font-weight: 700; color: #132238;\"\u003e8M0054726\u003c\/strong\u003e (current supersession \u003cstrong style=\"font-weight: 700; color: #132238;\"\u003e8M0186195\u003c\/strong\u003e). The ECM uses manifold absolute pressure to meter fuel on MerCruiser MPI sterndrive and inboard engines.\u003c\/p\u003e\n  \u003cp style=\"margin: 0 0 14px; font-size: 16px; line-height: 1.6; color: #132238;\"\u003e\n    \u003cstrong style=\"font-weight: 700; color: #132238;\"\u003eMatch this part in this order:\u003c\/strong\u003e\u003cbr\u003e\n    1. \u003cstrong\u003eOEM number\u003c\/strong\u003e on the sensor or in your parts list — 881731, 861249A1, 8M0054726, or 8M0186195 (also Sierra 18-7550 \/ 18-7660)\u003cbr\u003e\n    2. \u003cstrong\u003eEngine serial number\u003c\/strong\u003e on the MerCruiser identification plate (block, flame-arrestor cover, or near the ignition coil bracket)\u003cbr\u003e\n    3. \u003cstrong\u003eEngine family\u003c\/strong\u003e against the Compatible Engine Models table below\n  \u003c\/p\u003e\n  \u003cp style=\"margin: 0; font-size: 16px; line-height: 1.6; color: #132238;\"\u003eIdentify the form from the product images: black plastic housing with molded side mounting tabs, a top pressure port with a multi-rib orange seal, and an integrated electrical connector shell marked PBT-GF30. This listing is \u003cstrong style=\"font-weight: 700; color: #132238;\"\u003enot\u003c\/strong\u003e the earlier MerCruiser 864856A1 \/ 805217A1 MAP family — do not order this sensor if your OEM number is 864856A1.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"margin: 0 0 24px; padding: 24px; background: #ffffff; border: 1px solid #e0e6ed; border-radius: 12px; box-shadow: 0 2px 8px rgba(19, 34, 56, 0.04);\"\u003e\n  \u003ch2 style=\"margin: 0 0 16px; font-size: 24px; font-weight: 700; color: #132238;\"\u003ePart Number Cross-Reference\u003c\/h2\u003e\n  \u003cp style=\"margin: 0 0 14px; font-size: 16px; line-height: 1.6; color: #132238;\"\u003eUse this table to confirm equivalent OEM and aftermarket numbers in the 881731 \/ 861249A1 MAP sensor chain.\u003c\/p\u003e\n  \u003cdiv style=\"margin: 16px 0 0; overflow-x: auto; border: 1px solid #e0e6ed; border-radius: 8px;\"\u003e\n    \u003ctable style=\"width: 100%; min-width: 600px; border-collapse: collapse; font-size: 15px;\"\u003e\n      \u003cthead\u003e\n        \u003ctr style=\"background: #132238; color: #ffffff;\"\u003e\n          \u003cth style=\"padding: 12px 14px; text-align: left; font-weight: 700; font-size: 14px; text-transform: uppercase; border-bottom: 2px solid #0b3a63;\"\u003eType\u003c\/th\u003e\n          \u003cth style=\"padding: 12px 14px; text-align: left; font-weight: 700; font-size: 14px; text-transform: uppercase; border-bottom: 2px solid #0b3a63;\"\u003eBrand\u003c\/th\u003e\n          \u003cth style=\"padding: 12px 14px; text-align: left; font-weight: 700; font-size: 14px; text-transform: uppercase; border-bottom: 2px solid #0b3a63;\"\u003ePart Number\u003c\/th\u003e\n          \u003cth style=\"padding: 12px 14px; text-align: left; font-weight: 700; font-size: 14px; text-transform: uppercase; border-bottom: 2px solid #0b3a63;\"\u003eNotes\u003c\/th\u003e\n        \u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n          \u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #e0e6ed;\"\u003e\u003cstrong\u003eOEM\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #e0e6ed;\"\u003eMercury \/ MerCruiser\u003c\/td\u003e\n          \u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #e0e6ed;\"\u003e881731\u003c\/td\u003e\n          \u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #e0e6ed;\"\u003ePrimary listing number (manifold air pressure sensor)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background: #f5f8fb;\"\u003e\n          \u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #e0e6ed;\"\u003e\u003cstrong\u003eOEM\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #e0e6ed;\"\u003eMercury \/ MerCruiser\u003c\/td\u003e\n          \u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #e0e6ed;\"\u003e861249A1\u003c\/td\u003e\n          \u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #e0e6ed;\"\u003eEarlier MAP assembly number in the same chain\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #e0e6ed;\"\u003e\u003cstrong\u003eOEM\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #e0e6ed;\"\u003eMercury \/ MerCruiser\u003c\/td\u003e\n          \u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #e0e6ed;\"\u003e8M0054726\u003c\/td\u003e\n          \u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #e0e6ed;\"\u003eLater Mercury number superseding 881731 \/ 861249A1\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background: #f5f8fb;\"\u003e\n          \u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #e0e6ed;\"\u003e\u003cstrong\u003eOEM\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #e0e6ed;\"\u003eMercury \/ MerCruiser\u003c\/td\u003e\n          \u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #e0e6ed;\"\u003e8M0186195\u003c\/td\u003e\n          \u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #e0e6ed;\"\u003eCurrent Mercury supersession of 881731\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #e0e6ed;\"\u003e\u003cstrong\u003eAftermarket\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #e0e6ed;\"\u003eSierra\u003c\/td\u003e\n          \u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #e0e6ed;\"\u003e18-7550\u003c\/td\u003e\n          \u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #e0e6ed;\"\u003eAftermarket cross for 861249A1 applications\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background: #f5f8fb;\"\u003e\n          \u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #e0e6ed;\"\u003e\u003cstrong\u003eAftermarket\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #e0e6ed;\"\u003eSierra\u003c\/td\u003e\n          \u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #e0e6ed;\"\u003e18-7660\u003c\/td\u003e\n          \u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #e0e6ed;\"\u003eAftermarket replacement for 881731 \/ 8M0054726 (ECM 555 MPI)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd style=\"padding: 12px 14px;\"\u003e\u003cstrong\u003eAftermarket\u003c\/strong\u003e\u003c\/td\u003e\n          \u003ctd style=\"padding: 12px 14px;\"\u003eMallory\u003c\/td\u003e\n          \u003ctd style=\"padding: 12px 14px;\"\u003e9-33604\u003c\/td\u003e\n          \u003ctd style=\"padding: 12px 14px;\"\u003eAftermarket replacement for MerCruiser 881731\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n  \u003cp style=\"margin: 14px 0 0; font-size: 16px; line-height: 1.6; color: #132238;\"\u003eThis is an aftermarket part manufactured by JLM Marine and is not sold as a genuine Mercury Marine or MerCruiser component.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"margin: 0 0 24px; padding: 24px; background: #ffffff; border: 1px solid #e0e6ed; border-radius: 12px;\"\u003e\n  \u003ch2 style=\"margin: 0 0 16px; font-size: 24px; font-weight: 700; color: #132238;\"\u003eCompatible Engine Models\u003c\/h2\u003e\n  \u003cp style=\"margin: 0 0 14px; font-size: 16px; line-height: 1.6; color: #132238;\"\u003eThis MAP sensor covers MerCruiser applications that call for \u003cstrong\u003e881731 \/ 861249A1 \/ 8M0054726\u003c\/strong\u003e. Confirm your OEM number and serial plate before ordering. For MerCruiser owners: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/serial-number-guide\/mercury-outboard-serial-number-guide\" target=\"_blank\" rel=\"nofollow noopener\" style=\"color: #0b3a63; text-decoration: underline; font-weight: 600;\"\u003eMercury \/ MerCruiser Serial Number Guide\u003c\/a\u003e and \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/diagrams\/mercury-parts-catalog\" target=\"_blank\" rel=\"nofollow noopener\" style=\"color: #0b3a63; text-decoration: underline; font-weight: 600;\"\u003eMercury Parts Diagrams\u003c\/a\u003e.\u003c\/p\u003e\n  \u003cdiv style=\"margin: 16px 0 0; overflow-x: auto; border: 1px solid #e0e6ed; border-radius: 8px;\"\u003e\n    \u003ctable style=\"width: 100%; min-width: 700px; border-collapse: collapse; font-size: 15px;\"\u003e\n      \u003cthead\u003e\n        \u003ctr style=\"background: #132238; color: #ffffff;\"\u003e\n          \u003cth style=\"padding: 12px 14px; text-align: left; font-weight: 700; font-size: 14px;\"\u003eEngine Family\u003c\/th\u003e\n          \u003cth style=\"padding: 12px 14px; text-align: left; font-weight: 700; font-size: 14px;\"\u003eCID \/ Liters\u003c\/th\u003e\n          \u003cth style=\"padding: 12px 14px; text-align: left; font-weight: 700; font-size: 14px;\"\u003eNotes\u003c\/th\u003e\n        \u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n          \u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #e0e6ed;\"\u003eMerCruiser MCM \/ MIE GM V-6 \u0026amp; V-8 MPI\u003c\/td\u003e\n          \u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #e0e6ed;\"\u003e305 \/ 350 cid\u003c\/td\u003e\n          \u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #e0e6ed;\"\u003eWhen parts list calls for 861249A1 (1998 \u0026amp; newer)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background: #f5f8fb;\"\u003e\n          \u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #e0e6ed;\"\u003eMerCruiser MX 6.2L MPI\u003c\/td\u003e\n          \u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #e0e6ed;\"\u003e6.2L MPI\u003c\/td\u003e\n          \u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #e0e6ed;\"\u003eQuicksilver fitment for 861249A1 (1998 \u0026amp; newer)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #e0e6ed;\"\u003eMerCruiser 7.4L MPI\u003c\/td\u003e\n          \u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #e0e6ed;\"\u003e7.4L MPI\u003c\/td\u003e\n          \u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #e0e6ed;\"\u003eQuicksilver fitment for 861249A1 (1998 \u0026amp; newer)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background: #f5f8fb;\"\u003e\n          \u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #e0e6ed;\"\u003eMerCruiser 496 MAG \/ 496 MAG H.O.\u003c\/td\u003e\n          \u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #e0e6ed;\"\u003e496 cid \/ 8.1L\u003c\/td\u003e\n          \u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #e0e6ed;\"\u003eWhere-used for 881731; ECM 555 MPI applications\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd style=\"padding: 12px 14px;\"\u003eMerCruiser 8.1L Inboard \/ Towsport\u003c\/td\u003e\n          \u003ctd style=\"padding: 12px 14px;\"\u003e8.1L\u003c\/td\u003e\n          \u003ctd style=\"padding: 12px 14px;\"\u003eWhere-used for 881731 (base and H.O. serial groups)\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n  \u003cp style=\"margin: 14px 0 0; font-size: 16px; line-height: 1.6; color: #132238;\"\u003eNot every MerCruiser EFI uses this sensor. If your parts list shows \u003cstrong\u003e864856A1\u003c\/strong\u003e or \u003cstrong\u003e805217A1\u003c\/strong\u003e, order that MAP family instead.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"margin: 0 0 24px; padding: 24px; background: #ffffff; border: 1px solid #e0e6ed; border-radius: 12px;\"\u003e\n  \u003ch2 style=\"margin: 0 0 16px; font-size: 24px; font-weight: 700; color: #132238;\"\u003eTechnical Specifications\u003c\/h2\u003e\n  \u003cdiv style=\"margin: 0; overflow-x: auto; border: 1px solid #e0e6ed; border-radius: 8px;\"\u003e\n    \u003ctable style=\"width: 100%; min-width: 520px; border-collapse: collapse; font-size: 15px;\"\u003e\n      \u003cthead\u003e\n        \u003ctr style=\"background: #132238; color: #ffffff;\"\u003e\n          \u003cth style=\"padding: 12px 14px; text-align: left; font-weight: 700; font-size: 14px;\"\u003eSpecification\u003c\/th\u003e\n          \u003cth style=\"padding: 12px 14px; text-align: left; font-weight: 700; font-size: 14px;\"\u003eValue\u003c\/th\u003e\n        \u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n          \u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #e0e6ed;\"\u003ePart type\u003c\/td\u003e\n          \u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #e0e6ed;\"\u003eManifold absolute pressure (MAP) sensor\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background: #f5f8fb;\"\u003e\n          \u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #e0e6ed;\"\u003ePrimary OEM number\u003c\/td\u003e\n          \u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #e0e6ed;\"\u003e881731\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #e0e6ed;\"\u003eRelated \/ supersession numbers\u003c\/td\u003e\n          \u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #e0e6ed;\"\u003e861249A1, 8M0054726, 8M0186195\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background: #f5f8fb;\"\u003e\n          \u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #e0e6ed;\"\u003eHousing material\u003c\/td\u003e\n          \u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #e0e6ed;\"\u003ePBT-GF30 glass-fiber reinforced thermoplastic (marked on connector)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #e0e6ed;\"\u003eFunction\u003c\/td\u003e\n          \u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #e0e6ed;\"\u003eIntake manifold absolute pressure signal for MPI fuel control\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr style=\"background: #f5f8fb;\"\u003e\n          \u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #e0e6ed;\"\u003eApprox. shipping size\u003c\/td\u003e\n          \u003ctd style=\"padding: 12px 14px; border-bottom: 1px solid #e0e6ed;\"\u003e3.00 in L × 1.00 in W × 2.38 in H\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd style=\"padding: 12px 14px;\"\u003eApprox. weight\u003c\/td\u003e\n          \u003ctd style=\"padding: 12px 14px;\"\u003e0.06 lb\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"margin: 0 0 24px; padding: 24px; background: #ffffff; border: 1px solid #e0e6ed; border-radius: 12px;\"\u003e\n  \u003ch2 style=\"margin: 0 0 16px; font-size: 24px; font-weight: 700; color: #132238;\"\u003eInstallation Guide\u003c\/h2\u003e\n  \u003cdiv style=\"position: relative; margin: 0 0 16px; padding: 0 0 0 42px; min-height: 28px;\"\u003e\n    \u003cspan style=\"position: absolute; left: 0; top: 0; width: 28px; height: 28px; background: #0b3a63; color: #ffffff; font-size: 14px; font-weight: 700; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center;\"\u003e1\u003c\/span\u003e\n    \u003cp style=\"margin: 0; font-size: 16px; line-height: 1.6; color: #132238;\"\u003eStop the engine, disconnect the negative battery cable, and allow the intake area to cool before working on the manifold.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"position: relative; margin: 0 0 16px; padding: 0 0 0 42px; min-height: 28px;\"\u003e\n    \u003cspan style=\"position: absolute; left: 0; top: 0; width: 28px; height: 28px; background: #0b3a63; color: #ffffff; font-size: 14px; font-weight: 700; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center;\"\u003e2\u003c\/span\u003e\n    \u003cp style=\"margin: 0; font-size: 16px; line-height: 1.6; color: #132238;\"\u003eLocate the MAP sensor on the intake \/ plenum. Unplug the harness connector and note wire routing and any vacuum path at the port.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"position: relative; margin: 0 0 16px; padding: 0 0 0 42px; min-height: 28px;\"\u003e\n    \u003cspan style=\"position: absolute; left: 0; top: 0; width: 28px; height: 28px; background: #0b3a63; color: #ffffff; font-size: 14px; font-weight: 700; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center;\"\u003e3\u003c\/span\u003e\n    \u003cp style=\"margin: 0; font-size: 16px; line-height: 1.6; color: #132238;\"\u003eRelease the mounting tabs or fasteners and lift the old sensor off. Inspect the manifold port, seal surface, and connector pins for oil, corrosion, or damage.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"position: relative; margin: 0 0 16px; padding: 0 0 0 42px; min-height: 28px;\"\u003e\n    \u003cspan style=\"position: absolute; left: 0; top: 0; width: 28px; height: 28px; background: #0b3a63; color: #ffffff; font-size: 14px; font-weight: 700; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center;\"\u003e4\u003c\/span\u003e\n    \u003cp style=\"margin: 0; font-size: 16px; line-height: 1.6; color: #132238;\"\u003eSeat the new sensor squarely so the sealed pressure port enters the manifold without cocking, reconnect the harness until it latches, restore battery power, and clear any related diagnostic codes after confirming a leak-free install.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cp style=\"margin: 0; font-size: 15px; line-height: 1.6; color: #d32f2f;\"\u003e\u003cstrong\u003eWarning:\u003c\/strong\u003e Work with the ignition off. A vacuum leak at the MAP port can cause rich\/lean running or driveability faults — verify the orange seal and port condition before restart.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"margin: 0 0 24px; padding: 24px; background: #ffffff; border: 1px solid #e0e6ed; border-radius: 12px;\"\u003e\n  \u003ch2 style=\"margin: 0 0 16px; font-size: 24px; font-weight: 700; color: #132238;\"\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n  \u003ch3 style=\"margin: 0 0 8px; font-size: 18px; font-weight: 700; color: #132238;\"\u003eWill this fix hesitation or a MAP-related check-engine light?\u003c\/h3\u003e\n  \u003cp style=\"margin: 0 0 16px; font-size: 16px; line-height: 1.6; color: #132238;\"\u003eOnly if the sensor itself failed. Check the manifold port seal, connector terminals, and related vacuum path before replacing. Match the OEM number on your old sensor first.\u003c\/p\u003e\n  \u003ch3 style=\"margin: 0 0 8px; font-size: 18px; font-weight: 700; color: #132238;\"\u003eIs 864856A1 the same part?\u003c\/h3\u003e\n  \u003cp style=\"margin: 0 0 16px; font-size: 16px; line-height: 1.6; color: #132238;\"\u003eNo. 864856A1 \/ 805217A1 is a different MerCruiser MAP family used on many earlier GM V6\/V8 EFI applications. This listing is for the 881731 \/ 861249A1 \/ 8M0054726 chain (MX 6.2L MPI, 7.4L MPI, 496 MAG \/ 8.1L, and related MPI).\u003c\/p\u003e\n  \u003ch3 style=\"margin: 0 0 8px; font-size: 18px; font-weight: 700; color: #132238;\"\u003eDoes Sierra 18-7660 cross to this sensor?\u003c\/h3\u003e\n  \u003cp style=\"margin: 0; font-size: 16px; line-height: 1.6; color: #132238;\"\u003eYes. Sierra 18-7660 replaces MerCruiser 881731 \/ 8M0054726 on ECM 555 MPI engines. Sierra 18-7550 is the catalog cross commonly listed against 861249A1. Mallory 9-33604 is the matching Mallory number for 881731.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"margin: 0; padding: 24px; background: #ffffff; border: 1px solid #e0e6ed; border-radius: 12px;\"\u003e\n  \u003ch2 style=\"margin: 0 0 16px; font-size: 24px; font-weight: 700; color: #132238;\"\u003eWhy Choose JLM MARINE?\u003c\/h2\u003e\n  \u003cul style=\"margin: 0; padding: 0 0 0 24px; font-size: 16px; line-height: 1.6; color: #132238;\"\u003e\n    \u003cli style=\"margin: 0 0 8px;\"\u003e\n\u003cstrong style=\"font-weight: 700;\"\u003ePrecision Fit:\u003c\/strong\u003e MAP sensor matched to MerCruiser 881731 \/ 861249A1 \/ 8M0054726 applications listed above.\u003c\/li\u003e\n    \u003cli style=\"margin: 0 0 8px;\"\u003e\n\u003cstrong style=\"font-weight: 700;\"\u003eQuality Control:\u003c\/strong\u003e Each batch is inspected for dimensional consistency and workmanship.\u003c\/li\u003e\n    \u003cli style=\"margin: 0;\"\u003e\n\u003cstrong style=\"font-weight: 700;\"\u003eDirect from Manufacturer:\u003c\/strong\u003e New-production aftermarket marine sensors engineered for MerCruiser MPI fuel control.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e","brand":"JLM Marine","offers":[{"title":"Default Title","offer_id":51981003981113,"sku":"23MS389","price":96.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/A4d1fade07d9a4a6db3639753935acc8et.webp?v=1772414313","url":"https:\/\/jlmmarine.com\/ru\/products\/map-sensor-881731-fits-mercruiser-mx-6-2-7-4-496-mag","provider":"JLM Marine Boat Parts Limited","version":"1.0","type":"link"}