In-Line Modules

In-line modules are essential control components installed directly into a vehicle's wiring harness or fluid routing to regulate, monitor, or optimize system performance. These modules sit between sensors, actuators, and the ECU, handling tasks such as fuel pump speed control, ignition timing, voltage regulation, and signal conditioning. Whether you're replacing a failed factory unit or upgrading for greater reliability, our collection covers a wide range of applications.

Each module is built to withstand underhood heat, vibration, and moisture. Expect sealed connectors, weather-resistant housings, and high-grade internal electronics that match or exceed OEM durability. Installation is typically plug-and-play with factory-style connectors, though some applications may require basic wiring or mounting. Always verify the module's electrical specifications—voltage range, current rating, and pin count—against your vehicle's service manual before ordering.

  • Stand-alone controllers that bypass or supplement the OEM ECU
  • Common in fuel, ignition, charging, and emissions systems
  • Available in solid-state and relay-based designs
  • Look for weatherproof seals and corrosion-resistant terminals

When choosing an in-line module, match the connector style, wire gauge provisions, and mounting footprint to your existing setup. Our specialists can help you cross-reference part numbers and confirm compatibility—reach out if you need assistance.

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aFe SCORCHER BLUE Bluetooth power module and wiring harness for 2025-2026 Nissan Armada and Infiniti QX80

$581.00

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Bully Dog GT security gateway bypass cable with vehicle-specific connectors for 2018-up RAM Cummins trucks.

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Bully Dog Unlock Cable for 2013-2017 Ram 2500/3500 6.7L Cummins with GT Diesel tuner

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SCT Performance Eliminator 4-Bank E-Prom tuning chip for Ford EEC-IV and EEC-V engine control units.

$220.00

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aFe POWER SCORCHER GT module with wiring harness and factory-style connectors for Nissan 1.6L turbo engines

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$387.00

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aFe SCORCHER GT black powder-coated aluminum power module with wire harness, connectors, and LED cabin switch.

$446.00

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$462.00

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HKS Standard Fuel Cut Defender electronic module with wiring pigtail and adjustment dial.

$160.00

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Set of four aFe POWER Scorcher high-performance ignition coils with manufacturer part number 77-92005-MB

$209.00

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Set of eight aFe POWER SCORCHER high-performance ignition coils for 2006-2026 Chrysler Dodge Jeep and Ram vehicles

$581.00

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Six aFe POWER SCORCHER high-performance ignition coils for BMW engines

$262.00

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aFe POWER SCORCHER high-performance ignition coil 77-92001 for BMW and Mini

$52.00

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aFe POWER Scorcher Blue electronic power module with vehicle-specific harness and in-cabin LED control switch.

$581.00

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aFe Power SCORCHER BLUE performance module with wiring harness and LED remote switch for Toyota and Lexus V6-3.5L engines.

$593.00

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aFe Power SCORCHER BLUE module with plug-and-play wiring harness and LED adjustment switch

$581.00

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aFe POWER SCORCHER BLUE electronic power module with factory-style wiring harness and LED control switch

$581.00

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aFe POWER SCORCHER GT module with black powder-coated aluminum case, wiring harness, and LED power setting switch

$451.00

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aFe POWER Scorcher GT performance module with plug-and-play wiring harness and LED cabin adjustment switch.

$387.00

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aFe POWER SCORCHER HD Module with plug-and-play wiring harness and LED power adjustment switch

$451.00

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aFe POWER SCORCHER GT performance module with black powder-coated aluminum housing, wire harness, and LED selector switch.

$446.00

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Black powder-coated aFe SCORCHER GT power module with plug-and-play wiring harness and factory-style connectors.

$387.00

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aFe POWER SCORCHER GT performance module with LED switch, wiring harness, and black powder-coated aluminum casing

$500.00

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aFe POWER Scorcher GT module with black aluminum casing, wiring harness, and LED selector switch.

$462.00

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aFe POWER Scorcher GT performance module with black powder-coated aluminum housing and factory-style wiring harness

$462.00

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aFe Power Scorcher HD performance chip with 4-position adjustment knob for 2002-2003 Ford 7.3L diesel engines

$285.00

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aFe Power Scorcher HD performance chip and 4-position adjustment dial for 1995-1997 Ford 7.3L diesel trucks.

$285.00

In stock
aFe POWER SCORCHER HD control module with wiring harness and in-cabin LED power adjustment switch

$462.00

Low in stock
aFe POWER Scorcher HD performance module with wire harness and LED in-cabin power adjustment switch.

$462.00

Low in stock
Black powder-coated aFe SCORCHER GT module with factory-style wiring harness and blue LED status indicator.

$387.00

In stock

Can’t Find the Part You Need?

Our catalog represents only a portion of the automotive products available through our supplier network. If you cannot find a specific part, brand, or application on our website, submit a request below, and our team will help source it for you.

Please include as much information as possible, such as your vehicle's year, make, model, trim, engine, desired brand, or part number, to help us quickly identify the correct product.

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