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RPS

Mechanical Fuel Pump for MerCruiser, OMC, Volvo Penta 3.0L 2.5L 3.7L Marine Engines - Replaces 8M0073435, 861676A1, 3854858, Sierra 18-7282 18-35437 - Filter Bowl Down Boat Fuel Pump with Gasket

  • Based on 235 reviews
Condition: New
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To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

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Availability: In Stock.
Fulfilled by Amazon

Arrives Monday, Oct 26
Order within 5 hours and 47 minutes
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Features

  • BROAD ENGINE COMPATIBILITY: Fits a wide range of GM inline 4-cylinder boat engines, including 2.5L (153 CID), 3.0L (181 CID), and 3.7L (224 CID) models spanning from 1982 to current production blocks
  • DOWNWARD FILTER BOWL DESIGN: Filter Bowl Down (Inlet at 2 o'clock, Outlet at 3 o'clock). The fuel filter bowl faces downward. Please physically verify your existing pump's orientation to ensure proper fit.
  • PERFECT FIT REPLACEMENT: Engineered to match OEM specifications for MerCruiser, OMC, and Volvo Penta 4-cylinder engines. Directly replaces part numbers 8M0073435, 861676A1, 42725A3, 509407, 3854858 and Sierra 18-7282.
  • COMPLETE INSTALLATION KIT: Includes high-quality mounting gaskets to ensure a secure, leak-free seal right out of the box.
  • RELIABLE MARINE PERFORMANCE: Restores proper fuel pressure (6-8 PSI) to your carburetor to prevent hard starting or stalling. Built with durable, marine-grade materials to withstand harsh environments.

Description

Quality Parts, Reliable Performance Our mission is to provide reliable parts that keep your vehicles running smoothly, ensuring you can enjoy your adventures without interruption. At RPS, we believe in building lasting relationships with our customers by offering products that they can depend on, every time. We don’t just sell automotive and marine parts; we use them ourselves. Understanding how quickly boat repair costs can escalate, we are committed to offering high-quality, durable products at reasonable prices. We strive to offer the best value, balancing top-notch quality with affordability. As passionate boaters and automotive enthusiasts, we find great joy and fulfillment in helping others get back on the water. Our background in boating and automotive trades gives us unique insights into your repair needs.

Brand: RPS


Fit Type: Vehicle Specific Fit


Vehicle Service Type: Boat


Material: Metal


Specification Met: OE


Fit Type: Vehicle Specific Fit


Compatible with Vehicle Type: Boat


Auto Part Position: Rear


Inlet Connection Type: 2.5


Gas Type: Gasoline


Mounting Type: Flange Mount


Operation Mode: Mechanical


Product Grade: New


Automotive Fit Type: Vehicle Specific Fit


OEM Equivalent Part Number: 8M0073435, 861676A1


Connector Type: 2.5


Outlet Connection Size: 2.5 inches


Inlet Connection Size: 2.5 inches


Specification Met: OE


Brand Name: RPS


Manufacturer Part Number: unknown


Unit Count: 1 Count


Manufacturer: RPS


Number of Packs: 1


UPC: 701649133820


Number of Items: 1


Material Type: Metal


Body Material: Metal


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Oct 26

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Fuel pump
Perfect fit. Works great !!
Reviewed in the United States on June 30, 2025 by dane franko

  • The pump fit exact and worked as expected.
The pump fit exact and worked as expected on my Bayliner Capri boat engine. Just primed the engine and the boat started right away.
Reviewed in the United States on September 13, 2024 by Rene Ruiz

  • Junk .. Died after 15 min of boat ride .
Junk ! I was having problem with my own pump as I could not go beyond 20 nots .. I bought this pump after looking into reviews and price .. The first one was missing the gasket .. Replacement was sent on time .. I installed it and put my boat in water aFter paying the launch fee .. the boat performed excellent ..At the speed of 42 nots max for first 10 minutes then it started sputtering.. it was not even a hot day to create a vapour lock .. so I slowed down and it performed well for another 10minutes but my happiness didn't lasted long as the engine died .. I thought it's a vapour lock so I poured some cold ice water on pump and waited for another 15 minutes ..The boat wouldn't start .. luckily I was prepared for this and I had my trolling motor and tools ready ..After the engine cooled down I pulled up another clear hose ,connected to the pump and the other end into gas can and tried starting the engine ..There was absolutely no suction while engaging in starter .. I pulled my boat to shore and still suspecting vapor lock came back .. tried attaching clear hose and gas can exercise again after 2 days of parked and cold engine .. there was absolutely no suction .. So that confirmed that the pump was bad and there was no vapour lock problem .. Returned it for refund and going for a new OEM Mercury pump for $220 .. . I hope that solves my problem but buying RPS was a serious mistake .. ... show more
Reviewed in the United States on May 12, 2021 by Bhupinder Nijjar

  • Perfect fit
Perfect replacement for my 2005 bay liner 175 mercury 3.0. Easy to install and came with three gaskets and a fuel filter. I included pic of the new pump next to my old black one.
Reviewed in the United States on March 31, 2021 by A_fifth_for_the_road A_fifth_for_the_road

  • Good part.
Good part.
Reviewed in the United States on March 12, 2020 by MG

  • Great pump
Direct replacement, good quality.
Reviewed in the United States on July 31, 2024 by Lobo

  • Did not fit
May fit most models but not mine
Reviewed in the United States on July 5, 2024 by Jerome Lord

  • Fit and works great 88 mercruiser 3.0
Ordered this fuel pump to replace the one on my 88 Wellcraft with mercruiser 3.0/ alpha one gen 1. Pump fit and works great, factory fittings worked perfectly on it. I will say if you don't already have the fittings, you should order the more expensive pump from Sierra as it appears to come with the fuel line fittings, this one doesn't, you just get the pump and new gaskets with this one, which is all I needed. ... show more
Reviewed in the United States on June 15, 2017 by Derekb

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