3800,
Showing 1–9 of 13 results
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LMMF “Party mode” temp sensor meltdown switch
$135.00🔥 LMMF “Party Mode” Switch
When normal mode just isn’t enough.
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LMMF 04-08 Series 3 3800 tuned ecm
$220.00Custom ECM Tune for 2004–2008 GM 3800 Engines
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LMMF 1998-2005 3800 Supercharged Simplified harness
$350.001998–2005 Supercharged 3800 Simplified Standalone Harness
Take the headache out of wiring your supercharged 3800 swap with this plug-and-play simplified harness, built specifically for GM 3800 Supercharged L67 / L32 engines (1998–2005). Designed for reliability and ease of installation, this harness removes unnecessary factory circuits and streamlines the wiring so you can focus on performance instead of wiring diagrams.
Perfect for engine swaps, race cars, and demolition derby builds, this harness provides a clean and dependable solution using brand-new wiring, connectors, and heavy-duty loom.
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LMMF 3100 – 3400 – 2200 – LS ECM mount bracket
$65.00 W body ecm mountADD TO CART -
LMMF 3100/3400/3800 Coil Bracket
$40.003100 / 3400 / 3800 Coil Pack Bracket
Keep your ignition system secure with the 3100 / 3400 / 3800 Coil Pack Bracket. This bracket is designed to provide a solid mounting solution for your coil pack while helping protect it from damage or tampering.
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LMMF 3100/3400/3800 Extended Length HD Plug Wires
$50.00W-Body Extended Heavy Duty Spark Plug Wire Set (Set of 6)
Select options
Available Colors: Red, Blue, or Yellow -
LMMF 98-05 3800 Series II simplified harness combo
$490.00Harness and ECM combo Fits 1998-2005 GM 3800
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LMMF 98-05 3800 Simplified wiring harness
$350.001998–2005 GM 3800 Simplified Standalone Wiring Harness
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LMMF 98-05 3800 Supercharged Tuned ECM
$150.00Custom Supercharged ECM Tune for 1998–2005 GM 3800 Series II
Built specifically for supercharged 3800 setups, this custom ECM tune is designed to maximize performance, responsiveness, and reliability—whether you're chasing horsepower or building a derby-ready monster.
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