Customer service is #1. Had a small part missing from my package. No hesitation in a reply and apology followed with a guarantee to ship the part asap! Other parts companies could learn from these guys. -Trevor
May 2018
Excellent customer service! Very knowledgeable and patient with all my questions.
MadJack Diesel Performance is founded on good old fashion service. We are dedicated to helping the customer get what they need at great price. With free shipping* on orders over $50.00, we strive to save you on your diesel pickup needs. One of our best selling lines is Amsoil Synthetics, let us show you how to save money on Amsoil.
We have a large online store to get you your truck part for your Chevrolet or GMC Duramax Diesel with Allison Transmission.
We will hook you up with the best prices and quality parts as well. We have a speciality EZ Mount Bracket for the Amsoil Dual Bypass System, and our very own Fuel Filter Access Door to make it easy to change your fuel filter on your Duramax. We recommend the Racor PFF 50216.
