Collection: Vendor CarrotTopTuning
Shop Carrot Top Tuning tucked engine harnesses, adapters, connectors and electrical components for Honda, VW and Audi applications.
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MK4 VW GTI Jetta Golf HID Headlight Relay Harness Plug n Play Wire Tuck
Regular price $47.95 USDRegular priceSale price $47.95 USD -
SR20DET Coil Conversion Harness - VR38 R35 GT-R Smart Coils
Regular price From $89.95 USDRegular price$163.90 USDSale price From $89.95 USDSale -
SS304 CNC Billet T3 to GT / GTX / G Series / Precision PTE Tial Turbo V-Band (VBand) Inlet Adapter Flange
Regular price $129.95 USDRegular price$0.00 USDSale price $129.95 USD -
D & B-Series OBD1 Tucked Engine Harness Kit w/ Subharness | 96-99 Acura Integra DC
Regular price $695.95 USDRegular price$749.95 USDSale price $695.95 USDSale -
Carrot Top Tuning Blow off Valve (BOV) BMW N54 135I 335I 535I E90 E92 E88 TWIN TURBO
Regular price $99.95 USDRegular priceSale price $99.95 USD -
CNC Billet 1.8T to 2.0T / R8 Coil Pack Adapters Spacers VW GTI JETTA GOLF PASSAT | AUDI A4 A6 TT | Black
Regular price $39.95 USDRegular price$69.95 USDSale price $39.95 USDSale -
1.8T VW/AUDI Wideband Conversion Harness - Plug n Play
Regular price $79.95 USDRegular price$89.95 USDSale price $79.95 USDSale -
Carrot Top Tuning Diverter Valve v2 (DV) BMW N54 135I 335I 535I E90 E92 E88
Regular price $89.95 USDRegular priceSale price $89.95 USD -

*Black Edition* Carrot Top Tuning Blow off Valve (BOV) BMW N54 135I 335I 535I E90 E92 E88 TWIN TURBO
Regular price $99.95 USDRegular priceSale price $99.95 USD -
D & B-Series OBD1 Tucked Engine Harness Kit w/ Subharness | 92-93 Non GSR Integra
Regular price From $359.45 USDRegular price$449.00 USDSale price From $359.45 USDSale -
Boost Tap 1.8T & 2.0T EA888 GEN3 TSI Boost Tap Kit VW AUDI MQB
Regular price $19.95 USDRegular priceSale price $19.95 USD -
4pcs Ignition Coil Connector Repair Plug Wiring Audi VW GTI Golf Jetta Passat
Regular price $19.95 USDRegular price$35.00 USDSale price $19.95 USDSale -
8x USCAR EV6 & EV14 Female to EV1 Male Fuel Injector Connectors Adapters VW AUDI
Regular price $30.50 USDRegular price$64.00 USDSale price $30.50 USDSale -
1.8T Injector Harness Wire Tuck Kit
Regular price $19.95 USDSale price $19.95 USDSale -
Audi B5 A4 VW Passat 1.8T AEB/ABZ/APH/AWV ICM Delete Conversion Resistor
Regular price $12.50 USDRegular price$16.95 USDSale price $12.50 USDSale -
Boost Tap 1.4 TSI & 2.5T TTRS RS3 Boost Tap Kit VW AUDI
Regular price $15.99 USDRegular price$19.99 USDSale price $15.99 USDSale -
VW Audi Seat Leon Cast Aluminum Thermostat Coolant Flange 06A-121-121C
Regular price $15.95 USDRegular price$29.99 USDSale price $15.95 USDSale -
Audi B5 S4 C5 A6 V6 30v 2.7T ICM Delete Conversion Resistors
Regular price $18.95 USDRegular priceSale price $18.95 USD -
8pcs Ignition Coil Connector Repair Plug Wiring Audi VW GTI Golf Jetta Passat
Regular price $39.95 USDRegular price$65.00 USDSale price $39.95 USDSale -
*Black Edition* Carrot Top Tuning Diverter Valve v2 (DV) MK4 MKIV A4 1.8T 007 008
Regular price $45.00 USDRegular price$55.00 USDSale price $45.00 USDSale -
VW Audi Seat Leon Cast Aluminum Flanges MK4 Jetta GLI 337/20AE Golf, TT MK1 1.8T
Regular price From $29.95 USDRegular price$69.95 USDSale price From $29.95 USDSale -
Audi B5 A4 VW PASSAT 1.8T 20V Ignition Coils + ICM Upgrade + Coil Conversion Harnesses Kit
Regular price $189.95 USDRegular priceSale price $189.95 USD -
6pcs Ignition Coil Connector Repair Plug Wiring Audi VW GTI Golf Jetta Passat
Regular price $29.95 USDRegular price$47.00 USDSale price $29.95 USDSale -
Audi B5 S4 C5 A6 V6 30v 2.7T ICM Delete + Coil Conversion Harnesses Kit
Regular price $72.45 USDRegular price$155.00 USDSale price $72.45 USDSale
Confirm Compatibility
Use the collection title, product application details, and vehicle or ECU options to narrow the correct wiring solution. If your chassis, engine, ECU, or swap combination is not clearly listed, contact VTI before ordering.
VTI-Built vs Partner Products
Products manufactured by VTI Motorsports are identified in their individual listings. Partner and vendor products remain available where they support a complete wiring or ECU installation.
Custom Configurations
For combinations outside the production catalog, submit a custom harness request with the chassis, engine, ECU, trigger system, injector type, and required sensors or auxiliary functions.























