AR21039 Mini-Matic Unloader w/ Injector

Marsoni

M251S

$143.55

Get it in 3 business days with 1 day shipping. Friday, May 29

AR21039 Mini-Matic Unloader w/ InjectorFEATURES: Unloader features bolt on design with internal bypass system Adjustable pressure releases pressure in pump head when in bypass, protecting from over pressurization Eliminates bypass hose and fittings Garden hose filter inlet Molded plastic adjusting knob is designed for user comfort Brass body with stainless steel plunger and spring SPECIFICATIONS: Adjustable built in 2. 0 injector 3 GPM maximum 2600 PSI maximum 160 F. maximum 1 2" FPT inlet

Easy Shipping

Quick Dispatch:

Your AR21039 Mini-Matic Unloader w/ Injector orders ship within 1-2 business days.

Delivery Options:

Standard: 3-7 business days
Fast: 2-3 business days
Express: 1-2 business days

Order Tracking:

You'll receive a tracking link by email once your AR21039 Mini-Matic Unloader w/ Injector ships.

Need Help?
Questions about AR21039 Mini-Matic Unloader w/ Injector, sizing, or delivery? We're just an email away.

Live Shipping Estimates:
Enter your location at checkout to see available shipping methods and costs for AR21039 Mini-Matic Unloader w/ Injector in your area.

Get Shipping Estimates

Country Zip/Postal Code

Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
Final sale items are not eligible for returns or exchanges.
To process your return/exchange, please contact us at [email protected]
Please click here for more details>>> Return & Exchange Policy

This product was definitely different than the original I have a 2001 Bayliner with a 3.0 MerCruiser and an alpha one second GEN drive The kit worked but the bottom gasket had a weird cut different than the original I added a gasket maker just in case (Yamaha Lube) Brand! All in all kit was fine, One thing to note is the directions that come with the kit at least for my version we’re not for the same alpha one second GEN 4 stroke kit that I got they were for a two-stroke in the pictures didn’t look the same as the parts that I had got which is fine but it’s miss leading when you send a 4 stroke kit but 2 stroke 90hp to 200hp alpha one directions! If it craps out this review will change

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on June 30, 2020

Verified Purchase

Air Assault

Boise, US

★★★★★ 5

Super great product. Has the power and functionality to get you repairing fast!

Super great product. Has the power and functionality to get you repairing fast! Fully recommend this and it has worked great since I've owned it. Still going strong in the durability and design looks like it will keep it going strong for many years. Highly highly recommend buying this. Will work in Kuwait, Iraq, UAE, and Saudi. Good for Camps around the CENTCOM area!

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on October 6, 2025

Verified Purchase

Jed V

San Leandro, US

★★★★★ 5

Solid Product

worked well, easy to install.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on November 3, 2025

Verified Purchase

Bozeman, US

★★★★★ 5

Excellent wire!

Size: 2 Colors each 10FT, Style: 10AWG

This wire is very soft and flexible. Many strands and tinned nicely. A perfect upgrade for my power wheel wires that keep melting. These have been running for months in exterior environment without any issues.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on October 31, 2025