Blog

Adapter Harnesses: When Can We Use Them

Posted by Kustom Truck Parts on 17th Jun 2026

Adapter Harnesses: When Can We Use Them
Adapter Harnesses for Caterpillar Engine Swaps: The Smart, Cost-Effective Solution for J1587 Trucks When a full engine-to-cab harness replacement isn’t necessary — and when it absolutely w … read more

Kustom Truck Processor: J1587 - J1939

Posted by Kustom Truck Parts on 21st Apr 2026

Kustom Truck Processor: J1587 - J1939
Understanding the Kustom Truck Data Management Processor  How our patented translator makes old engines and new trucks work together perfectly Imagine you’re a kid trying to play with a fri … read more

Part 3: Fan Troubleshooting Guide - Detroit

Posted by Kustom Truck Parts on 9th Feb 2026

Part 3: Fan Troubleshooting Guide - Detroit
Fan Troubleshooting Guide: Part 3 – Detroit Engines A properly functioning cooling fan is crucial for Detroit engine performance and longevity in heavy-duty trucks. Whether your fan is running c … read more

Part 2: Fan Troubleshooting Guide - Cummins

Posted by Kustom Truck Parts on 2nd Feb 2026

Part 2: Fan Troubleshooting Guide - Cummins
Fan Troubleshooting Guide: Part 2 – Cummins Engines A reliable cooling fan is essential for keeping your Cummins engine running strong under heavy loads. If the fan is always on (hurting fuel ec … read more

Part 1: Fan Troubleshooting Guide - Caterpillar

Posted by Kustom Truck Parts on 26th Jan 2026

Part 1: Fan Troubleshooting Guide - Caterpillar
Fan Troubleshooting Guide: Part 1 – Caterpillar Engines Truck owners and mechanics know that a properly functioning cooling fan is critical for engine health, especially in heavy-duty applicatio … read more

Bumper to Back of Cab - Why it Matters

Posted by Kustom Truck Parts on 8th Jan 2026

Bumper to Back of Cab - Why it Matters
The Importance of Bumper to Back of Cab (BBC) Dimension and Engine Conversions When it comes to engine conversions in Class 7 and 8 trucks, especially Peterbilt and Kenworth models, there is one measu … read more

NAMUX Generations Explained

Posted by Kustom Truck Parts on 29th Dec 2025

NAMUX Generations Explained
Jump To: PACCAR NAMUX Generations PreNAMUX NAMUX1 NAMUX2 NAMUX3 NAMUX4 Why Identification Matters for Your Build PACCAR NAMUX Generations: Engine-to-Cab Interface Nuances for Peterbilt and Kenworth … read more

Paccar MX-13 vs. Cummins ISX

Posted by Kustom Truck Parts on 10th Dec 2025

Paccar MX-13 vs. Cummins ISX
Which Engine Is Easier To Swap? At Kustom Truck Parts, we support a lot of engine conversions in Peterbilt and Kenworth trucks. Since 2010 Paccar has offered essentially two different brands of engine … read more

So You Have A "Donor Truck"

Posted by Kustom Truck Parts on 20th Nov 2025

So You Have A "Donor Truck"
The Truth About Using a Donor Truck for an Engine Swap in a Peterbilt or Kenworth There’s one misconception we hear every single day:“I bought a complete donor truck with the exact engine … read more