W1.1L Bolt-ON Unloader w/ Injector

Marsoni

M251S

$101.11

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

W1.1L Bolt-ON Unloader w/ InjectorFEATURES: Built in chemical injector includes variable metering adjustment Compact design features forged brass body and hardware Adjustable unloader valve with internal bypass Versatile mounts in seconds to either side of pump manifold Reduces cost eliminates need for fittings and bypass hose SPECIFICATIONS: Maximum Pressure: 1600 PSI Maximum Temperature: 165 F Maximum Flow: 4 GPM Inlet Port: 1 2" FPT Outlet Port: 3 8" MPT Chemical Inlet: 1 4"

Easy Shipping

Quick Dispatch:

Your W1.1L Bolt-ON 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 W1.1L Bolt-ON Unloader w/ Injector ships.

Need Help?
Questions about W1.1L Bolt-ON 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 W1.1L Bolt-ON 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

I use Pennzoil Platinum Euro Full Synthetic 5W-40 in my Fiat 124 Spider, and it’s been great so far. The engine runs smooth and quiet, and cold starts feel solid. No issues with oil consumption, and it holds up well between changes. The 6-pack of 1-quart bottles is convenient and makes it easy to measure out exactly what I need. Overall, it’s a quality synthetic oil at a good value. I’ll keep using it in my 124 Spider.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on February 28, 2026

Verified Purchase

SEA

Carnegie, US

★★★★★ 5

Ok for gas engines

Size: 1 Quart, Style: 1-Pack, Configuration: Euro 5W-40

Has latest API cert (SQ). Not with latest VW / Porsche / Mercedes diesel engine approvals.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on April 25, 2026

Verified Purchase