BD Diesel High Idle Kit (1036620) for 1998.5-2004 Cummins 5.9L

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The BD Diesel High Idle Kit (1036620) is an easy-to-install upgrade for 1998.5–2004 Dodge Ram trucks with 5.9L Cummins engines. It improves cold-weather performance by allowing selectable idle speeds (up to 1,800 RPM), aiding engine warm-up, battery charging, and preventing wet stacking. Ideal for cold climates and heavy-duty use, it enhances engine functionality and longevity.

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Description

The BD Diesel High Idle Kit (1036620) is a valuable upgrade for 1998.5–2004 Dodge Ram trucks equipped with the 5.9L Cummins diesel engine. Designed to improve engine warm-up and battery charging performance during cold weather, this kit allows the driver to increase engine idle speed with ease. It offers selectable idle speeds, typically up to 1,800 RPM, which helps maintain optimal engine temperature and prevents wet stacking during extended idling periods. The kit is plug-and-play with factory connections, making installation straightforward without the need for complex wiring or programming. Ideal for cold climates and heavy-duty applications, the BD Diesel High Idle Kit enhances functionality and prolongs engine life.

Additional information
Weight 1.8 lbs
Dimensions 12 × 9 × 3 in
Fitment

Fitment

1998.5-2004 Cummins 5.9L

Features

Features

  • Easy to install
  • Faster engine warm-ups
  • Adjustable
  • Great to use for remote starters, PTO’s and extended idling applications
  • 900/1200/1500/1800/2100 RPM
Installation

Installation

Installation Video

INSTALL TIME

  • 1 Hour 30 Minutes

WARRANTY

Parts

  • 12-Months
  • 24,000 Miles
Warning

Warning

  • 2003-2004 vehicles must have Bell Crank mounted APPS
About brand
BD Diesel Performance is a diesel performance manufacturer focused on reliability and towing performance. The company designs parts that improve durability, power delivery, and vehicle control. BD Diesel products support daily driving, heavy towing, and work-ready diesel trucks. BD Diesel engineers turbochargers, exhaust brakes, transmission upgrades, and fuel system components. Their products help manage heat, control exhaust flow, and protect drivetrain parts. These upgrades improve drivability under load and during long pulls. Diesel owners trust BD Diesel for proven solutions. Whether upgrading a tow rig or improving reliability, BD Diesel delivers parts built for real-world use.
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