{"product_id":"lisnhlin-inboard-impeller-repair-kit-for-volvo-penta-3-0-8-1-stop-lug-o-ring-seals-direct-fit-1999-2005","title":"Lisnhlin Inboard Impeller Repair Kit for Volvo Penta 3.0–8.1 — Stop Lug \u0026 O-ring Seals, Direct-Fit (1999–2005)","description":"\u003cstrong\u003eLisnhlin 21951348 is a complete inboard impeller repair kit engineered to replace the stop lug and O-ring seals on Volvo Penta 3.0–8.1 engines for reliable water pump operation.\u003c\/strong\u003e\n\n\u003cp\u003eThis repair kit provides the critical parts needed to restore cooling-pump function on Volvo Penta inboard engines (pump mounted on the crankshaft) from model years 1999–2005. It replaces multiple OEM numbers and includes precision components to fit a broad range of Volvo Penta 3.0, 4.3, 5.0, 5.7 and 8.1 engines. Whether you're preparing a boat for the season or performing routine maintenance, this kit is sized and specified to return the impeller assembly to dependable service.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this kit match my Volvo Penta engine?\u003c\/h3\u003e\n\u003cp\u003eThe Lisnhlin kit is built specifically for Volvo Penta inboard configurations where the water pump is mounted directly on the crankshaft, covering popular engine displacements from 3.0 through 8.1. It replaces many OEM part numbers so you can confirm fit by cross-referencing your existing parts or manual.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCompatible with Volvo Penta models 3.0, 4.3, 5.0, 5.7 and 8.1 (pump on crankshaft).\u003c\/li\u003e\n\u003cli\u003eCovers engines commonly produced from 1999 to 2005 for direct-fit replacement.\u003c\/li\u003e\n\u003cli\u003eReplaces multiple part numbers including 21213660, 21951348, 3857954 and others.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat components are included and why do they matter?\u003c\/h3\u003e\n\u003cp\u003eThe kit contains the impeller stop lug plus the correct O-ring seals and related hardware needed to rebuild the pump sealing and rotation stop function. Worn lugs or brittle seals are common causes of reduced cooling performance; this kit addresses those failure points directly.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStop lug to secure the impeller and prevent slip under load.\u003c\/li\u003e\n\u003cli\u003eO-ring seals sized for a tight watertight pump assembly.\u003c\/li\u003e\n\u003cli\u003eAdditional hardware where required to restore original fit and alignment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow difficult is installation for DIYers and mechanics?\u003c\/h3\u003e\n\u003cp\u003eInstallation is straightforward for anyone familiar with inboard cooling pumps and basic marine repair tools; the kit is supplied with the components required to return the assembly to service. Less experienced users should follow the engine service manual or consult a marine mechanic to ensure correct torque and seal seating.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned for easy, direct replacement without custom modifications.\u003c\/li\u003e\n\u003cli\u003eNo special tools beyond common marine hand tools and seal lubricant.\u003c\/li\u003e\n\u003cli\u003eFollow torque specs and alignment steps in the Volvo Penta service instructions for a reliable seal.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat performance improvements should I expect after replacing parts?\u003c\/h3\u003e\n\u003cp\u003eReplacing a degraded impeller stop lug and old O-rings restores proper pump function and helps maintain consistent coolant flow. This reduces the risk of overheating due to slippage or seal leaks and improves the overall reliability of the cooling system while underway.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRestores correct impeller engagement and rotation stability.\u003c\/li\u003e\n\u003cli\u003eRe-establishes proper sealing to prevent leaks and cavitation.\u003c\/li\u003e\n\u003cli\u003eHelps maintain designed coolant flow and engine temperature control.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The Lisnhlin 21951348 impeller repair kit is intended for boat owners, marine technicians and fleet managers who operate Volvo Penta inboard engines with crankshaft-mounted pumps from the late 1990s to mid-2000s. It suits DIYers doing routine pump maintenance, yards prepping vessels for the season, and professional mechanics needing a direct-fit replacement kit that matches multiple OEM part numbers.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does this kit fit Volvo Penta pumps on the crankshaft?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It is designed for Volvo Penta inboard pumps mounted on the crankshaft, covering 3.0–8.1 engines from 1999–2005.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Are all necessary seals and the stop lug included?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The kit contains the stop lug, O-ring seals and required hardware for a full impeller stop and seal replacement.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Lisnhlin","offers":[{"title":"Default Title","offer_id":48085732196510,"sku":"B0D7PKJZ5M","price":43.89,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/lisnhlin-front-package-assembly.jpg?v=1785877135","url":"https:\/\/northtrailauto.ca\/products\/lisnhlin-inboard-impeller-repair-kit-for-volvo-penta-3-0-8-1-stop-lug-o-ring-seals-direct-fit-1999-2005","provider":"North Trail Auto","version":"1.0","type":"link"}