Mercury MerCruiser Seawater Pump Impeller Kit - 8M0137219
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The Mercury MerCruiser Quicksilver 8M0137219, also referenced as 47-8M0137219, is a genuine OEM heavy duty sea water pump impeller repair kit for select MerCruiser sterndrive and inboard engine applications using the factory brass seawater pump. This kit is designed for brass pump housings with front housing wear or scoring caused by sand, silt, shell fragments, or marine debris. Instead of replacing the full brass pump assembly, the kit uses a shortened heavy duty impeller with an over-molded inner wear plate to restore the front sealing surface and help recover proper seawater pump pressure for engine cooling.
Key Features
- Genuine Mercury MerCruiser Quicksilver OEM seawater pump impeller repair kit.
- Part number: 8M0137219; commonly referenced with Mercury/Quicksilver prefix 47-8M0137219.
- Heavy duty 8-blade neoprene impeller design for raw-water cooling service.
- Shortened impeller design measures approximately 2-5/8 in. diameter x 2 in. length.
- Engineered approximately 0.030 in. shorter than a standard impeller to work with the included front wear plate.
- Includes an over-molded inner front wear plate to compensate for scoring or wear at the front of the brass seawater pump housing.
- Intended for factory brass sea water pump applications, not plastic or composite pump bodies.
Application Compatibility
Designed for select 2000 and newer MerCruiser V6 and V8 applications using the factory brass seawater pump, including commonly associated 4.3L, 5.0L, 350 MAG, 496, and 502 CID configurations where the parts diagram calls for this kit.
Common application context includes:
- MerCruiser V6 and V8 engines with factory brass seawater pump
- MCM/MIE 4.3L MPI applications where specified
- MCM/MIE 5.0L MPI applications where specified
- 350 MAG MPI applications where specified
- 305, 350, 496, and 502 CID MerCruiser applications where specified
- Select Mercury/MerCruiser 4.5L and 6.2L applications where specified by serial number and pump configuration
This kit is not intended for standard plastic or composite body seawater pumps.
Serial Number Fitment Notice
Confirm fitment using the engine serial number, seawater pump body material, and the Mercury/MerCruiser parts diagram for the exact engine. This repair kit is specifically for applications using the factory brass seawater pump and should not be substituted for impeller kits used in plastic or composite pump housings.
When This Part Needs Replacement
Replace this kit when seawater pump output is reduced, engine temperature rises under load, the impeller has missing or hardened vanes, or the brass pump housing shows front-side scoring from debris. It is also a smart repair option when the pump housing is serviceable but the inner front wear surface is damaged enough to reduce water pressure with a standard impeller.
Installation Notes
Inspect the brass pump housing before installation. The included over-molded wear plate is intended to restore the front wear surface, but deep housing damage, cracks, distorted covers, damaged shafts, or worn seals may require additional pump service. Lubricate the impeller with an approved installation lubricant, confirm correct impeller vane direction during assembly, and replace related seals or gaskets supplied with the kit. Use the Mercury/MerCruiser service manual procedure for the specific engine and pump assembly.
Alternate/Superseded Part Numbers
- 8M0137219 — Mercury/MerCruiser Quicksilver kit number
- 47-8M0137219 — Mercury/Quicksilver prefixed impeller kit reference
- 8M0103389 — Heavy duty shortened impeller component
- 8M0072979 — Over-molded inner front wear plate component
- 8M2021987 — Custom formed rubber O-ring component
Parts Desk Insight
This kit is useful when the brass seawater pump housing has light to moderate front wear but the complete pump body does not need replacement. The shorter impeller and wear plate work together as a matched repair setup, so standard-length impellers should not be mixed into this configuration. Always confirm the pump style before ordering because similar MerCruiser engines may use different seawater pump housings depending on year, serial range, and cooling-system layout.
Shipping: Ships same or next day for fast Canada wide shipping. ⚓
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
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