×
0
Menu
STILL DECIDING? WE CAN HELP 800-708-0087
Monster Transmission • We Build More Than Transmissions

Killer Grid Heater Upgrade Kit — 6.7L Cummins (2007–2024)

Fix the infamous grid-heater nut failure without losing cold-start performance.

$219.95
$230.95
SALE 10% OFF
Read FAQs
Emissions Compliant (SEMA Cert.)
Retains Full Heater Output
No Tuning Required

Why This Kit Works

The OE grid heater routes ~200 amps through a tiny bolt-and-nut connection inside the intake. Over time, heat and vibration can cause the nut to arc, break loose, and drop into the engine—risking piston, head, and valve damage. This upgrade removes both problematic nuts by fastening directly into the lower busbar with self-locking threads, ensuring a robust electrical path while keeping the stock grid heater’s full heat output.

  • Eliminates OE nuts inside the intake path (both locations)
  • Self-locking threads prevent connection from backing out
  • Retains OEM cold-start performance in all climates
  • No tuning, no reduced heat, no drivability compromises

Features & Benefits

  • Fastens directly into the lower busbar (no loose hardware in intake)
  • Fully emissions compliant — street legal with certification
  • Easy install — includes replacement hardware, gaskets & special tools
  • 2007–2012 note: Minor tab trim with Dremel/hacksaw required
  • Keep your grid heater: no power loss, no tune required
Install Time~3 Hours
Warranty (Parts)12 Months

About This Product

The Killer Grid Heater Upgrade Kit is purpose-built to address a major flaw in the 6.7L Cummins intake grid-heater connection. By removing the in-intake nut-and-bolt failure points and upgrading the electrical path, it protects your engine while preserving full heater output for reliable cold starts. Competing “solutions” often cost more, reduce heat, require tuning, or struggle in winter. This kit fixes the circuit correctly at the source.

2007–2012 Installation Note: Trim a small aluminum tab on the grid heater with a Dremel or hacksaw to clear the new connection. See the installation manual for step-by-step details and safety guidance.

What’s In The Box

  • Upgraded lower busbar with integrated self-locking threads
  • Replacement hardware & gaskets
  • Special tools required for the job
  • Detailed installation instructions
SEMA Certification: SC-BDD01-0135 • Emissions Compliant

Vehicle Fitment

Designed for 6.7L Cummins applications:

  • 2007–2024 RAM 2500 & 3500 (pickup)
  • 2007–2024 RAM 3500/4500/5500 (cab & chassis)

Always verify compatibility with your VIN and intake/grid-heater configuration before purchase.

Frequently Asked Questions

  • Will this reduce my grid heater’s heat output?

    No. The upgrade retains full stock functionality and heat output for dependable cold starts.

  • Is tuning required after installation?

    No tuning is required. This is an electrical and hardware upgrade that corrects a connection flaw.

  • Is it emissions legal?

    Yes. It’s fully emissions compliant and carries SEMA Certification No. SC-BDD01-0135.

  • How difficult is the install?

    Plan for about 3 hours. Standard tools are used; the kit includes special tools and hardware. For 2007–2012 models, trim a small aluminum tab as directed in the manual.

  • What fails in the OE design?

    A small nut inside the intake can overheat, arc, and eventually break free, risking engine damage. This kit eliminates those nuts and uses a self-locking threaded lower busbar.

  • What warranty coverage is included?

    12-month parts warranty. Keep your proof of purchase and follow install guidelines.

  • Will it work with aftermarket intakes?

    It’s engineered around OE-style grid heater assemblies. If you run an aftermarket intake/manifold, verify clearance and heater retention before purchase.

Killer Grid Heater Upgrade Kit $219.95$230.95