{"product_id":"25700-93l00-lower-unit-gearcase-seal-kit-for-suzuki-df250a-df250ap-df300a-df300ap-jlm-marine","title":"25700-93L00 Lower Unit Gearcase Seal Kit for Suzuki DF250A DF250AP DF300A DF300AP | JLM Marine","description":"\u003ch2\u003eLower Unit Gearcase Seal Kit – Fits Suzuki DF250A, DF250AP, DF300A, DF300AP (All Years)\u003c\/h2\u003e\n\n\u003cp\u003eThis complete lower unit gearcase seal kit is designed for Suzuki 4-stroke outboard engines, specifically models \u003cstrong\u003eDF250A\u003c\/strong\u003e, \u003cstrong\u003eDF250AP\u003c\/strong\u003e, \u003cstrong\u003eDF300A\u003c\/strong\u003e, and \u003cstrong\u003eDF300AP\u003c\/strong\u003e across all production years. Engineered to restore proper sealing in your lower unit, this kit helps prevent water intrusion and oil leaks that can lead to costly gearcase damage.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDirect Replacement for OEM Part Numbers:\u003c\/strong\u003e 25700-93L00, 25700-93L01, 25700-93L02. This aftermarket seal kit is built to OEM specifications, providing reliable performance at competitive pricing.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eIncludes all necessary seals for complete lower unit service\u003c\/li\u003e\n\u003cli\u003eDesigned for Suzuki 4-stroke outboard engines\u003c\/li\u003e\n\u003cli\u003ePrevents water intrusion and maintains proper lubrication\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Cross-Reference\u003c\/h2\u003e\n\n\u003cp\u003eUse this table to confirm equivalent part numbers across OEM and aftermarket brands.\u003c\/p\u003e\n\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse:collapse; width:100%;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSuzuki OEM\u003c\/td\u003e\n\u003ctd\u003e25700-93L00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSuzuki OEM\u003c\/td\u003e\n\u003ctd\u003e25700-93L01\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSuzuki OEM\u003c\/td\u003e\n\u003ctd\u003e25700-93L02\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eCompatible Engine Models\u003c\/h2\u003e\n\n\u003cp\u003eConfirm your engine model\/year in the table below. For Suzuki owners, you can review exploded diagrams here to verify part numbers: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/serial-number-guide\/suzuki-outboard-parts-diagrams-catalog\" rel=\"nofollow noopener\" target=\"_blank\"\u003eSuzuki Parts Diagrams \u0026amp; Catalog\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse:collapse; width:100%;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSuzuki\u003c\/td\u003e\n\u003ctd\u003eDF250A\u003c\/td\u003e\n\u003ctd\u003eAll Years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSuzuki\u003c\/td\u003e\n\u003ctd\u003eDF250AP\u003c\/td\u003e\n\u003ctd\u003eAll Years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSuzuki\u003c\/td\u003e\n\u003ctd\u003eDF300A\u003c\/td\u003e\n\u003ctd\u003eAll Years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSuzuki\u003c\/td\u003e\n\u003ctd\u003eDF300AP\u003c\/td\u003e\n\u003ctd\u003eAll Years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse:collapse; width:100%;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eLower Unit Gearcase Seal Kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEngine Type\u003c\/td\u003e\n\u003ctd\u003e4-Stroke Outboard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOEM Reference\u003c\/td\u003e\n\u003ctd\u003e25700-93L00, 25700-93L01, 25700-93L02\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eLower Unit Service \u0026amp; Rebuild\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\n\u003cp\u003eThis seal kit includes \u003cspan style=\"color:red;\"\u003eall seals required for complete lower unit gearcase service\u003c\/span\u003e on the specified Suzuki outboard models.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Guide\u003c\/h2\u003e\n\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003ePreparation:\u003c\/strong\u003e Disconnect the battery and place the outboard in a secure, upright position. Gather all necessary tools including a torque wrench, seal driver set, and marine grease.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove Lower Unit:\u003c\/strong\u003e Drain the gearcase oil completely and disconnect the shift linkage. Remove the mounting bolts and carefully separate the lower unit from the mid-section.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisassemble Gearcase:\u003c\/strong\u003e Remove the propeller, propeller shaft, and associated components. Take note of the orientation and position of all parts for reassembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove Old Seals:\u003c\/strong\u003e Carefully extract all old seals, O-rings, and gaskets from the gearcase housing. Inspect seal surfaces for scoring, corrosion, or damage that may require repair.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean All Surfaces:\u003c\/strong\u003e Thoroughly clean all sealing surfaces with a suitable solvent and remove all old gasket material. Ensure surfaces are completely dry before installing new seals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall New Seals:\u003c\/strong\u003e Lubricate new seals with marine grease and install them using the appropriate seal driver to avoid damage. Ensure each seal is seated squarely and fully in its bore.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReassemble Components:\u003c\/strong\u003e Reinstall the propeller shaft, drive shaft, and all internal components in reverse order of disassembly. Apply marine grease to sliding surfaces as specified.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReattach Lower Unit:\u003c\/strong\u003e Align the lower unit with the mid-section, reconnect the shift linkage, and install mounting bolts. Torque all fasteners to manufacturer specifications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRefill Gearcase Oil:\u003c\/strong\u003e Fill the gearcase with the correct type and quantity of marine gear oil through the lower fill hole until it flows from the upper vent. Install both drain plugs with new sealing washers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInspect for Leaks:\u003c\/strong\u003e Run the engine briefly in a test tank or on muffs and check all seal areas for oil or water leaks. Monitor gearcase oil level after the first hour of operation.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How do I know if my lower unit seals need replacement?\u003c\/strong\u003e\u003cbr\u003e\nA: Common signs include milky or discolored gearcase oil (indicating water intrusion), oil leaking from the propeller shaft or lower unit, unusual noise or vibration from the gearcase, or difficulty shifting gears. If you notice any of these symptoms, inspect and replace seals promptly to prevent internal damage.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can I replace individual seals, or do I need the complete kit?\u003c\/strong\u003e\u003cbr\u003e\nA: While it's technically possible to replace individual seals, we strongly recommend replacing all seals whenever the lower unit is disassembled. Old seals may fail shortly after reassembly, requiring you to repeat the labor-intensive process.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How often should I replace the lower unit seals?\u003c\/strong\u003e\u003cbr\u003e\nA: Seal replacement intervals depend on usage and operating conditions. Inspect seals during annual maintenance or every 100 hours of operation. Replace immediately if you detect leaks, water contamination, or if seals show signs of hardening or deterioration.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Do I need any special tools to install this seal kit?\u003c\/strong\u003e\u003cbr\u003e\nA: Yes, proper installation requires a seal driver set (or appropriately sized sockets), torque wrench, marine grease, and basic hand tools. A service manual for your specific engine model is highly recommended to ensure correct torque specifications and assembly procedures.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Will this kit fit both counter-rotation and standard-rotation models?\u003c\/strong\u003e\u003cbr\u003e\nA: This seal kit is designed to fit all DF250A, DF250AP, DF300A, and DF300AP models regardless of rotation direction. However, always verify your OEM part number against the cross-reference table before purchasing.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What's the difference between OEM and aftermarket seal kits?\u003c\/strong\u003e\u003cbr\u003e\nA: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How fast do you ship and how much does it cost?\u003c\/strong\u003e\u003cbr\u003e\nA: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is your warranty and return policy?\u003c\/strong\u003e\u003cbr\u003e\nA: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused \u0026amp; in original condition); please see our policy page or reach out for instructions.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Notes\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eVerify 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.\u003c\/li\u003e\n\u003cli\u003eThis product is an aftermarket replacement part and is not an OEM component.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended to ensure safety and optimal performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose JLM MARINE?\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuality Assured:\u003c\/strong\u003e As a trusted manufacturer for over 20 years, we supply top marine brands globally.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Global Shipping:\u003c\/strong\u003e Free delivery worldwide in 5–15 days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from Manufacturer:\u003c\/strong\u003e Competitive pricing without compromising quality.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"JLM Marine","offers":[{"title":"Default Title","offer_id":51981034422585,"sku":"24SK065","price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/12_f52792bb-53f0-4f51-a9fb-97f71d458daf.jpg?v=1772414860","url":"https:\/\/jlmmarine.com\/products\/25700-93l00-lower-unit-gearcase-seal-kit-for-suzuki-df250a-df250ap-df300a-df300ap-jlm-marine","provider":"JLM Marine Boat Parts Limited","version":"1.0","type":"link"}