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Flexible Rubber Water Pump Impeller 18958-0001 – 12 Blade Neoprene Key Drive – Fits Cummins 3802444
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How to Match This Part
This is a flexible rubber raw water pump impeller. It sits inside the pump housing behind the cover plate and is driven by a keyed shaft. It replaces the primary original part number Jabsco 18958-0001, and is also supplied against JMP 7600-01, Johnson 09-704BT-1, DJ 08-19-1201 and Sherwood 17000.
Match this part by checking your engine in this order:
1. Original impeller part number (stamped on the old impeller or listed in the pump section of your parts catalog)
2. Blade count (this listing is 12 blades)
3. Drive type (this listing is a brass key-drive hub, not a spline or pin drive)
4. Pump model (cast or labelled on the pump body)
Identify it physically before ordering. This impeller has twelve vanes moulded in black neoprene around a machined brass key-drive insert. JMP 7600-01 is 82.4 mm diameter, 73.4 mm width and 20 mm bore. It is a large-diameter key-drive impeller, not the 79 mm 9-blade spline 7526-01 and not a 16 mm Jabsco spline family part.
- ✓ Primary OEM: Jabsco 18958-0001
- ✓ Product form: 12-blade neoprene impeller, brass key-drive insert, 73.4 mm width, 20 mm bore
- ✓ Fitment: part number, then blade count, then drive type
Part Number Cross-Reference
Use this table to confirm equivalent part numbers. Sherwood 17000K and Johnson 09-704BT-1 are kit-style numbers. This listing is the impeller only.
| Type | Brand | Part Number | Notes |
|---|---|---|---|
| OEM | Jabsco Pump | 18958-0001 | Primary reference. 12-blade neoprene, key drive |
| OEM | SPX Flow Johnson Pumps | 09-704BT-1 | Johnson kit-style number for this size. Impeller only is sold here |
| OEM | JMP Pump | 7600-01 | JMP 12-blade key-drive equivalent |
| OEM | DJ Pump | 08-19-1201 | 12-blade key-drive equivalent |
| OEM | Cummins Onan | 3802444 | Cummins Onan impeller number |
| OEM | Cummins Onan | 3897337 | Cummins Onan impeller number |
| OEM | Cummins Onan | 3916852 | Cummins Onan impeller number |
| OEM | Cummins Onan | 3925236 | Cummins Onan impeller number |
| OEM | Caterpillar | 1W5664 | CAT raw-water pump impeller |
| OEM | Caterpillar | 7E0321 | CAT raw-water pump impeller |
| OEM | Sherwood Pump | 17000 | Sherwood impeller only |
| OEM | Sherwood Pump | 17000K | Sherwood kit number. Impeller only is sold here |
| Other brand | Industry interchange | J-108J | Source-sheet other-brand number |
| Other brand | Industry interchange | 888-108J | Source-sheet other-brand number for this SKU |
Compatible Engine Models
Confirm the original impeller number and count twelve blades on a 20 mm key-drive hub. Do not assume every Cummins B / C series or Caterpillar 3116 / 3126 / 3208 uses this part.
| Brand | Engine / Pump Model | Original Part No. | Notes |
|---|---|---|---|
| Jabsco / Johnson / JMP / DJ / Sherwood | Pumps specified for 18958-0001, 09-704BT-1, 7600-01, 08-19-1201 or 17000 | 18958-0001, 09-704BT-1, 7600-01, 08-19-1201, 17000 | 12-blade, key drive, 82.4 × 73.4 × 20 mm |
| Cummins Onan | Engines whose parts list calls for 3802444, 3897337, 3916852 or 3925236 | 3802444, 3897337, 3916852, 3925236 | Match the original number rather than a B-series or C-series dump |
| Caterpillar | Engines whose parts list calls for 1W5664 or 7E0321 | 1W5664, 7E0321 | Match the original number rather than a 3116 / 3126 / 3208 dump |
Technical Specifications
| Specification | Value |
|---|---|
| Part type | Flexible rubber impeller, raw water pump |
| Number of blades | 12 |
| Impeller diameter (A) | 82.4 mm |
| Impeller width / depth (B) | 73.4 mm |
| Shaft bore diameter (C) | 20 mm |
| Insert / drive type | Key drive |
| Insert material | Machined brass |
| Vane material | Neoprene rubber |
Package Contents
This listing is for the impeller only, as shown in the impeller in the product images. Please refer to the part number cross-reference table to confirm component details.
Cover gasket, O-ring and lubricant are not included. JMP 7600-01K adds an O-ring (ORG0030) and lubricant. Sherwood 17000K is a kit number; the impeller only is sold here.
Installation Guide
- 1 Stop the engine, let it cool, and close the raw water seacock so water cannot enter the boat while the pump is open.
- 2 Remove the cover plate screws and lift off the cover. Keep the screws and the old gasket together so you can compare the seal size when reassembling.
- 3 Note the keyway orientation, then grip the brass insert and pull the old impeller straight off. Recover any broken vane pieces from the downstream cooling circuit before continuing.
- 4 Clean the housing bore and the wear plate, and inspect them for scoring. Apply a marine-grade impeller lubricant, glycerine or soapy water to the bore and the new vanes. Do not use petroleum-based grease, which attacks neoprene.
- 5 Align the keyway in the brass insert with the pump shaft key, then press the impeller in while turning the shaft in the normal direction of rotation so all twelve vanes lay over the same way.
- 6 Refit the cover plate with a serviceable gasket, tighten the screws evenly in a crisscross pattern, open the seacock, then start the engine and confirm a solid stream of cooling water and no leaks at the cover.
Note: Professional installation is recommended to ensure safety and optimal performance.
Troubleshooting & FAQ
Important Notes
- Verify that the product images and specifications match your original part. If discrepancies exist, even if your model is listed, do not proceed with the purchase.
- This product is an aftermarket replacement part and is not an OEM component.
- The impeller is supplied on its own. Cover seals and lubricant must be ordered separately if your service procedure requires them.
- This is a 12-blade, 82.4 mm key-drive impeller, 73.4 mm wide with a 20 mm bore. It will not fit 9-blade spline 7526-01 or 16 mm-bore Jabsco spline impellers.
- Never run the pump dry. Even a few seconds without water will damage the neoprene vanes.
- Professional installation is recommended to ensure safety and optimal performance.
Why Choose JLM MARINE?
- Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
- Fast Global Shipping: Free delivery worldwide in 5–15 days.
- Direct from Manufacturer: Competitive pricing without compromising quality.
Мы осуществляем доставку практически по любому адресу в мире, при этом для большинства регионов доступна бесплатная доставка.
Для наших типичных клиентов из США и Канады сроки доставки следующие:
- Amazon FBA : заказы будут доставлены в течение 1–5 рабочих дней после размещения заказа (в определенные особые периоды, такие как крупные акции, Рождество и т. д., время доставки Amazon FBA может быть изменено).
- Доставка со склада в США : заказы будут доставлены в течение 7 дней после размещения заказа.
- Доставка со склада в Китае : заказы будут доставлены примерно через 12 дней после размещения заказа.
Когда вы размещаете заказ, мы оценим даты отправки и доставки для вас на основе доступности ваших товаров и выбранных вами вариантов доставки. В зависимости от выбранного вами поставщика услуг доставки, предполагаемые даты доставки могут отображаться на странице расценок на доставку.
Также обратите внимание, что стоимость доставки многих товаров, которые мы продаем, основана на весе. Вес любого такого товара можно найти на странице с его подробностями. Чтобы отразить политику транспортных компаний, с которыми мы работаем, все веса будут округлены до следующего целого фунта.
Основанная в 2002 году, компания JLM Marine зарекомендовала себя как специализированный производитель высококачественных морских деталей, базирующийся в Китае. Наша приверженность совершенству в производстве заслужила нам доверие ведущих мировых морских брендов.
Как прямой поставщик, мы обходим посредников, что позволяет нам предлагать конкурентоспособные цены без ущерба качеству. Такой подход не только поддерживает экономическую эффективность, но и гарантирует, что наши клиенты получают наилучшую ценность напрямую от источника.
Мы рады расширить свое присутствие через розничные каналы, предлагая наш опыт и приверженность качеству непосредственно владельцам и любителям лодок по всему миру.
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