The Hammer Down Diesel Store


Specializing in the 4bt & 6bt Cummins

Email us at​ and we will respond quickly. 
Available 7 days a week


We specialize in stock & performance 4bt & 6bt diesel parts such as VE & P7100 inj pumps, Injectors, Turbo’s, HVHP lift pump kits, P7100 conversion kits, Pacbrake Exhaust Brakes etc.


With competitive prices in diesel products, we’ll give you the best value for your time and money.

All prices are in $USD


With over 30 years of diesel experience, we believe in treating our customers fairly because we want your business now and into the future.

Farrell Diesel Service injection pumps and services.

Seth Farrell has built a reputation as one of the top injection pump builders in North America. Farrell Diesel Services pumps use mostly genuine Bosch parts and are smooth, while being able to flow big fuel.

Stock & Custom 4bt and 6bt VE & P7100 injection pump builds.

**All Farrell Diesel Service pumps are completely rebuilt with new gaskets & seals, inspected, calibrated to customer specs, and comes with flow sheet. Sorry, we do not just test or calibrate pumps without a full rebuild **

Free shipping on most new parts totalling $100 or more.

***We only ship ground & to PayPal confirmed address***

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4BT Cummins

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