QUICKMARINER sterndrive sea water pump impeller kit for Volvo Penta 3.0–8.1L (short-screw pumps) — replacement impeller and seals

QUICKMARINER 21213660 is a replacement sterndrive sea water pump impeller kit designed to restore reliable raw-water cooling on Volvo Penta 3.0–8.1L crank-drive marine engines built 2005 and earlier.

This impeller kit supplies the wear components required to service a range of Volvo Penta and compatible OMC/Johnson/Sierra pumps so you can rebuild the raw water pump and protect your engine’s cooling system. It’s intended for older short-screw bracket-mounted pumps (1999–2005 and earlier), and it replaces several OEM part numbers used across boat engine models. Read the compatibility notes and installation details before ordering to ensure a correct fit.

Which Volvo Penta engines and pumps will this impeller kit fit?

The kit fits many crank-drive Volvo Penta engines in the 3.0L, 4.3L, 5.0L, 5.7L and 8.1L families when paired with the matching short-screw pump housing. It covers a wide list of pump casting numbers and replaces multiple OEM part numbers from Johnson, Sierra, Yanmar and others.

• Engine coverage: Volvo Penta 3.0L–8.1L (maintenance models from 2005 and earlier)
• Compatible pump castings: 3812693, 3812695, 3857202, 3862482, 21214595, 21214601, and more
• Replaces: Volvo Penta 825940, 3855546, 21213660 and cross-references like Johnson 09-1027B

How do I know this kit fits my boat’s pump assembly?

Check the pump housing mounting style and screw length: this kit is made for short-screw bracket-mounted pumps produced in or before 2005. If your pump uses longer screws or later housings (post‑2005 designs), this kit will not fit.

• Verify the pump casting number stamped on the housing against the compatibility list
• Confirm the pump is bracket-mounted with short screws (1999–2005 era)
• Compare OEM cross-references (e.g., 825940, 3858256) to your parts manual

What comes in the kit and what should I expect during installation?

The kit typically contains the impeller and any associated seals or gaskets required for a standard rebuild. Installation requires basic mechanical skills: remove the pump cover, extract the old impeller, inspect the housing and wear plate, replace the impeller, and reassemble with correct screw lengths and torque.

• Contents: impeller plus service items needed for pump rebuild (verify before starting)
• Tools: screwdrivers, socket set, impeller puller (if stuck) and marine sealant if applicable
• Tip: inspect the housing and replace worn wear plates or seals to prevent leaks

Are there any important limitations or compatibility warnings?

Yes—this kit is explicitly for pumps manufactured in or before 2005 with short-screw bracket mountings. It will not fit newer pump housings introduced after 2005 or models that require long screws or different internal geometries.

• Not compatible with post-2005 long-screw pump designs
• Confirm spline, shaft size and housing type before purchase
• Cross-reference OEM numbers listed to avoid ordering mistakes

Who is this for: This QUICKMARINER impeller kit is for boat owners, mariners, and marine technicians maintaining Volvo Penta and compatible OMC engines built 2005 or earlier. It’s ideal for do-it-yourself servicing of bracket-mounted raw water pumps, for replacement parts stocking at small marine service shops, or for seasonal maintenance of recreational and small commercial vessels that use the specified pump castings and OEM cross-references.