I have an 8mm plug in the oil drain on my air compressor. Will this screw into that so I can use it as an extender to drain my oil easier?

I'm not sure if the 8mm adapter will fit you compressor, but the adapter is 8mm - 1.25mm (Male) x 3/8" - 16 (Female) NC Adapter.

Will this work on a Yamaha F20 outboard?

Yes, use the 8mm adapter to screw into the drain hole and then screw the swivel adapter into the female threads of the swivel adapter.

Will this fit a 2006 Yamaha F250? Thanks!

I have a pair of Yamaha 2012 250's and it fits. There are two fittings that come with the unit.

Will this fit on a 2001 Mercury Optimax 225hp fill hole? Thanks!

It has adapters. They fit my 1983 Yamaha 2 stroke and my 2021 Mercury 4 stroke. I believe this kit will fit your motor.

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€ 31.29

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Sold byAmazon ItalyDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚙️ Pump up your marine maintenance game — no spills, no stress!

COMPACT CONVENIENT - Lightweight 3.7 oz design with re-closeable storage bag and easy-to-follow instructions.
DURABLE QUALITY BUILD - Crafted from alloy steel and aluminum for long-lasting, corrosion-resistant performance.
UNIVERSAL FIT ADAPTERS - Includes 3/8" swivel plus 8mm & 10mm metal adapters to fit most outboard motors (excl. Volvo Penta).
PRECISION PUMPING POWER - Delivers 8cc of gear oil per stroke for efficient, mess-free servicing.
VERSATILE SUCTION TUBES - Two rigid tubes reach both tall and short quart bottles, eliminating guesswork.

Slippery Pete Lower Unit Gear Oil Pump is a manual, precision tool designed for quick, clean gear oil changes on most marine outboard motors. Featuring 8cc per stroke pumping capacity, three metal adapters for universal fit (excluding Volvo Penta), and dual rigid suction tubes, it ensures efficient oil transfer from standard quart bottles. Built with durable alloy steel and aluminum, it offers corrosion resistance and ease of use, backed by a 4.7-star rating from nearly 6,000 users.

Specifications

ASIN	B07QQVCRSD
Brand	Slippery Pete
Brand Name	Slippery Pete
Color	Chrome Metal Swivel Adapter
Customer Reviews	4.7 out of 5 stars 6,013 Reviews
Engine Displacement	8 Cubic Centimeters
Engine Type	2 Stroke, 4 Stroke
Included Components	10mm Adapter, 3/8 inch Swivel Adapter, 8cc Fluid Pump with Fill Tube, 8mm Adapter
Item Type Name	Lower Unit Gear Oil Pump
Manufacturer	Slippery Pete
Manufacturer Part Number	573B164
Manufacturer Warranty Description	90 days from date of purchase
Material	Alloy Steel, Aluminum
Material Type	Alloy Steel, Aluminum
Model Number	573B164
Mounting Type	Suction Mount
Operation Mode	Manual
UPC	855375008164

Reviews

A**A

13.04.2026

M**J

23.03.2026

D**.

17.03.2026

G**6

12.05.2025

J**D

22.03.2026

J**F

4.03.2026

K**N

27.04.2026

R**J

24.03.2026

P**S

29.01.2026

J**A

2.09.2024

B**E

19.01.2021

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TrustScore 4.5 | 7,300+ reviews

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