--- product_id: 172041551 title: "Lower Unit Gear Oil Pump for Standard Quart Bottles, Includes 3/8 inch Metal Swivel, 8mm and 10mm Adapters Fit Most Marine Boat Outboard Motors (NOT COMPATIBLE WITH VOLVO PENTA)" brand: "slippery pete" price: "232 Lei" currency: RON in_stock: true reviews_count: 11 url: https://www.desertcart.ro/products/172041551-lower-unit-gear-oil-pump-for-standard-quart-bottles-includes store_origin: RO region: Romania --- # 2 suction tubes for all bottle sizes 3 metal adapters included 8cc per pump stroke Lower Unit Gear Oil Pump for Standard Quart Bottles, Includes 3/8 inch Metal Swivel, 8mm and 10mm Adapters Fit Most Marine Boat Outboard Motors (NOT COMPATIBLE WITH VOLVO PENTA) **Brand:** slippery pete **Price:** 232 Lei **Availability:** ✅ In Stock ## Summary > ⚓ Pump up your marine maintenance game with precision and ease! ## Quick Answers - **What is this?** Lower Unit Gear Oil Pump for Standard Quart Bottles, Includes 3/8 inch Metal Swivel, 8mm and 10mm Adapters Fit Most Marine Boat Outboard Motors (NOT COMPATIBLE WITH VOLVO PENTA) by slippery pete - **How much does it cost?** 232 Lei with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/172041551-lower-unit-gear-oil-pump-for-standard-quart-bottles-includes) ## Best For - slippery pete enthusiasts ## Why This Product - Trusted slippery pete brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Dual Suction Tubes:** Long and short tubes ensure you reach the bottom of any standard quart bottle effortlessly. - • **Compact & Convenient:** Re-closeable poly bag and clear instructions make storage and use hassle-free—never miss a maintenance beat. - • **Precision Pumping Power:** Delivers 8cc of gear oil with every smooth stroke for efficient, mess-free changes. - • **Universal Fit Flexibility:** Includes 3 rugged metal adapters (3/8" swivel, 8mm, 10mm) to fit most marine outboard motors—except Volvo Penta. - • **Durable Metal Swivel Adapter:** Steel swivel adapter prevents thread stripping and allows easy installation without twisting the entire pump. ## Overview Slippery Pete's Lower Unit Gear Oil Pump is a manual, high-precision 8cc per stroke pump designed for standard quart bottles with a 28mm opening. Featuring a durable 3/8" metal swivel adapter plus 8mm and 10mm metal adapters, it fits most marine outboard motors except Volvo Penta. Dual suction tubes accommodate various bottle heights, making gear oil changes cleaner and faster. Backed by a 90-day warranty and praised by over 6,000 users, this kit is a must-have for professional-grade boat maintenance. ## Description Changing your lower unit gear oil can be a simple job if you have the right kit, and Slippery Pete's Lower Unit Gear Oil Pump is definitely the right one! For starters, this kit comes with 3 different adapters: With these 3 adapters, this kit will fit MOST outboard lower unit drain holes. For American made outboards, you'll probably only need to use the 3/8" Swivel Adapter, since most American brands have a 3/8" lower unit drain hole. This swivel steel adapter is much more convenient than the plastic ones (shown in one of the above pictures), because you do not need to turn the entire pump as you're screwing the adapter into the drain hole. And since it is made of steel, you do not have to worry about stripping the threads (which often happens when screwing a plastic adapter into steel threads). However, for most foreign made outboards, you'll probably need to use one of the 2 metric adapter WITH the 3/8" Swivel Adapter, as demonstrated in the picture above. (NONE OF THE ADAPTERS IN THIS KIT WILL FIT VOLVO PENTA) The 8cc pump itself comes with a long and a short suction tube so that it will reach the bottom of your quart bottle (depending on the height of the quart bottle). NOTE: THE PUMP'S CAP ADAPTER WILL ONLY FIT STANDARD QUART BOTTLES WITH A 28mm (1.125") OPENING! ## Features - 🚤 PUMPS 8CC PER PUMP STROKE (Includes Metal 3/8" Adapter Connected To Clear Plastic Tubing) - 🚤 THIS GEAR OIL CHANGE KIT includes 3 adapter sizes. 3/8"(Swivel, Metal), 8mm and 10mm (Metal). Take the guess work out of figuring out the size of your Lower Unit's gear oil drain plug. (WON'T FIT VOLVO PENTA) - 🚤 2 Rigid Suction Tubes REACHES TO BOTTOM OF TALL AND SHORT GEAR OIL BOTTLES - 🚤Easy To Follow Instructions On Back Of Header Card - 🚤 Re-closeable Poly Bag for Storage ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B07QQVCRSD | | Brand Name | Slippery Pete | | Color | Chrome Metal Swivel Adapter | | Customer Reviews | 4.7 4.7 out of 5 stars (6,058) 4.7 out of 5 stars | | 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 Type | Alloy Steel, Aluminum | | Model Number | 573B164 | | Mounting Type | Suction Mount | | Operation Mode | Manual | | Upc | 855375008164 | ## Product Details - **Brand:** Slippery Pete - **Color:** Chrome Metal Swivel Adapter - **Engine Displacement:** 8 Cubic Centimeters - **Engine Type:** 2 Stroke, 4 Stroke - **Material:** Alloy Steel, Aluminum ## Images ![Lower Unit Gear Oil Pump for Standard Quart Bottles, Includes 3/8 inch Metal Swivel, 8mm and 10mm Adapters Fit Most Marine Boat Outboard Motors (NOT COMPATIBLE WITH VOLVO PENTA) - Image 1](https://m.media-amazon.com/images/I/71HoeuAzfSL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: 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?** A: 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. **Q: Will this work on a Yamaha F20 outboard?** A: 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. **Q: Will this fit a 2006 Yamaha F250? Thanks!** A: I have a pair of Yamaha 2012 250's and it fits. There are two fittings that come with the unit. **Q: Will this fit on a 2001 Mercury Optimax 225hp fill hole? Thanks!** A: It has adapters. They fit my 1983 Yamaha 2 stroke and my 2021 Mercury 4 stroke. I believe this kit will fit your motor. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Well Made and Perrfect for Mercury Engines *by on Reviewed in the United States April 13, 2026* Used this pump to fill my Mercury Verado lower unit with gear oil. The cap did not fit the oil canister which was not a standard quart but that did not matter. The 10 mm tip was the ideal fit for my engine. It was as easy as plug and pump. Worked out great and even easier as the tip can be turned easily to place it well fitted onto the hole. Made for easy work. Definitely recommend this item. Well made and works great. ### ⭐⭐⭐⭐⭐ Works great for Bravo 3 Outdrive *by on Reviewed in the United States June 3, 2026* Great pump, works as advertised. Was surprised the shorter fill tube was long enough to empty a quart bottle and move to have a longer option. Three fittings are convenient. Strong pump power. Good value. Would buy again! ### ⭐⭐⭐⭐⭐ Great product *by on Reviewed in the United States May 25, 2026* Works great. Wish there was a way of clearing excess fluid from hose once done. ## Frequently Bought Together - Slippery Pete - Lower Unit Gear Oil Pump for Standard Quart Bottles, Includes 3/8 inch Metal Swivel, 8mm and 10mm Adapters Fit Most Marine Boat Outboard Motors (NOT COMPATIBLE WITH VOLVO PENTA) - Quicksilver 858064Q01 High Performance SAE 90 Gear Lube for Mercury Outboards and MerCruiser Sterndrives, 32 oz - Quicksilver 802859Q1 2-4-C Marine Grease with Teflon, Multi-Purpose Marine Lubricant – 8 oz. Tube --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.ro/products/172041551-lower-unit-gear-oil-pump-for-standard-quart-bottles-includes](https://www.desertcart.ro/products/172041551-lower-unit-gear-oil-pump-for-standard-quart-bottles-includes) --- *Product available on Desertcart Romania* *Store origin: RO* *Last updated: 2026-07-04*