Browse Categories
Browse by Manufacturer

Mailing Lists

MKM Customs is your source for all things diesel truck related! We provide diesel truck enhancing aftermarket parts that are built by the most in-demand and sought after parts manufacturers. Some of the brands we carry include:

  • Sinister Diesel
  • Automotive Racing Products
  • Pacific Performance Engineering
  • AirDog
  • Edge Products
  • Bully Dog
  • Flo-Pro
  • Yukon
  • MBRP Performance Exhaust
  • SCT
  • MADS Smarty
Our comprehensive selection of brand name manufacturers is guaranteed to have the part you need, by the manufacturer you want, at a price you’ll be satisfied with.

Our aftermarket parts can be used for Ford, Chevy, GMC, and Dodge diesel trucks. From our Ford F350 leveling kit to our EGR coolers, we know that our selection of aftermarket parts will have what you need – in stock and at a fair price.

Black Diamond Head Gaskets

A head gasket sits between the engine block and the cylinder heads in a standard internal combustion engine. Without head gaskets, the cylinders will not be able to seal properly, which will negatively affect an engine’s compression rate. An engine without head gaskets is also prone to having coolant and engine oil leak into the cylinders.

MKM Customs offers black diamond head gaskets for customers who want to improve or replace their vehicle’s current head gaskets. The black diamond gaskets are available in several sizes and feature improved durability that helps to reduce bore distortion in an engine. As well, these head gaskets feature a durable black coating, five layers of stainless steel, and adaptive fluoroelastomer coating.

Ford Leveling Kits

MKM Customs has a huge selection of Ford Leveling kits! Whether you need a Ford F350 leveling kit for your 1999-2004 Super Duty or a leveling kit for your newer diesel model truck, we have a kit in stock that is designed to level your Ford truck.

Our Ford F250 leveling kits and F350 leveling kits come equipped with all of the bolts, parts, and instructions you’ll need for correct installation. As well, our leveling kits feature the Sinister Diesel brand name. Sinister Diesel products are manufactured by MKM Customs and feature high quality design and materials.

Our Ford F250 Leveling kits and other Ford leveling kits are available for immediate purchase, most of which are backed with a price match guarantee!

Price Match Guarantee on Diesel Performance Parts

Many of our diesel performance parts are backed by price match guarantees. This means that our customers will never overpay for any parts that we provide! All you’ll need to do is fill out some basic information such as shipping cost, competitor’s price, competitor’s website, and your contact information. Once the price is confirmed, we’ll offer you a cheaper price on the product! It is important to note that our price match guarantee only applies to items that are over $100.

To provide the best customer experience available and to ensure that our customers never overpay, we offer our price match guarantee for up to 30 days! Customers who purchase an item only to find a cheaper version elsewhere just need to fill out the required information and our representative will contact you for your refund. So if you want the best price available for your diesel performance parts, visit to view our selection of parts and accessories.