Mercury – Crankcase Oil Pump | Manual Extraction System | 802889A1

Overview

Changing your engine oil just got easier. The Mercury Marine 802889A1 Crankcase Oil Pump makes routine oil changes clean, quick, and simple — no more awkward drain pans or spills in tight engine compartments. This manual extraction pump pulls used oil directly through the dipstick tube, keeping everything tidy and efficient. Designed for MerCruiser sterndrives and inboards with threaded dipstick fittings, it can also be used on Mercury and Mariner 8HP and 9.9HP FourStroke outboards (2004 and older) with an optional adapter. It’s a must-have tool for smooth, mess-free maintenance.

Key Features

• Purpose: Extracts engine oil through the dipstick tube for clean, convenient oil changes.
• Design: Manual pump system eliminates the need for messy drain pans.
• Performance: Makes oil changes easier in cramped engine compartments.
• Compatibility: Fits MerCruiser sterndrive and inboard engines with threaded dipstick fittings.
• Adaptability: Works on Mercury/Mariner 8 & 9.9HP FourStroke outboards (2004 and older) using adapter 828369.

Engine & Boat Compatibility

• MerCruiser sterndrive and inboard engines with threaded dipstick tube fitting
• Mercury and Mariner 8HP & 9.9HP FourStroke outboards (model year 2004 and prior) with adapter 828369

Performance & Real-World Benefits

The 802889A1 oil pump is all about convenience and cleanliness. Instead of draining oil into a pan under the engine, this hand-operated pump pulls oil directly out through the dipstick tube — ideal for tight spaces where access is limited. It keeps maintenance simple, clean, and efficient, reducing the chance of spills or contamination.

It’s built tough, easy to operate, and compact enough to store onboard. Whether you’re maintaining your own sterndrive or servicing small outboards, this pump makes oil changes one of the easiest jobs on your maintenance list.

Why Choose Mercury OEM

The Mercury 802889A1 is a factory-designed tool, built specifically for Mercury and MerCruiser engines. Generic pumps can leak, clog, or fail to fit properly, leading to a messy job or poor oil extraction.

Mercury’s OEM pump is engineered for precision and durability, ensuring proper fitment, smooth suction, and long service life. It’s the same tool Mercury technicians use for oil changes in professional marine service centers — efficient, reliable, and built to last.

FAQ

Q1: What engines is this pump made for?
It fits MerCruiser sterndrives and inboards with threaded dipstick fittings and can also be used on Mercury/Mariner 8 & 9.9HP FourStroke outboards (2004 and older) with adapter 828369.

Q2: How does it work?
It manually extracts oil through the dipstick tube, saving time and eliminating messy drain pan use.

Q3: Is it difficult to use?
No — it’s a simple hand pump system that anyone can operate.

Q4: Can I reuse it for multiple oil changes?
Yes — it’s made from durable, corrosion-resistant materials for long-term use.

Q5: Why choose Mercury’s OEM version?
Mercury’s design guarantees perfect fit and smooth operation, ensuring a clean, efficient oil change every time.