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Wiring Specialties, a performance industry mainstay for nearly two decades, expanded on its engine conversion wiring services in 2009 with the launch of ready-made,...
Wiring Specialties, a performance industry mainstay for nearly two decades, expanded on its engine conversion wiring services in 2009 with the launch of ready-made, plug-and-play engine and transmission harnesses. The company’s popular engine wiring harness and O2 sensor extension harness offerings are designed to simplify engine swaps and eliminate hassles associated with them. Save time, improve performance, and give your engine bay a factory look by ordering yours today!
Wiring Specialties, a performance industry mainstay for nearly two decades, expanded on its engine conversion wiring services in 2009 with the launch of ready-made, plug-and-play engine and transmission harnesses. The company’s popular engine wiring harness and O2 sensor extension harness offerings are designed to simplify engine swaps and eliminate hassles associated with them. Save time, improve performance, and give your engine bay a factory look by ordering yours today!
Harness, Coil Pack, Pro Series, For 58X Reluctor, Chevy, LS, Pair
Part Number: WRS-WSLS3CPH
Estimated Ship Date: Today
Estimated Ship Date: Today
Ignition Coil Wiring Harness, Pro Series, Vortec/LQ Style Coils, Pair
Part Number: WRS-WPVRTCPH
Estimated Ship Date: Today
Estimated Ship Date: Today
Ignition Coil Wiring Harness, Pro Series, LS1/LS6 Style Coils, Pair
Part Number: WRS-WPLS1CPH
Estimated Ship Date: Today
Estimated Ship Date: Today
Ignition Coil Wiring Harness, Pro Series, LS2 Style Coils, Pair
Part Number: WRS-WPLS2CPH
Estimated Ship Date: Today
Estimated Ship Date: Today
Oxygen Sensor Extension Harness, 4 Wire, Square Plug, 24 in. Long, LS1, Pair
Part Number: WRS-WSLS1O2EXT
Estimated Ship Date: Today
Estimated Ship Date: Today
Oxygen Sensor Extension Harness, 4 Wire, Flat, 24 in. Long, LS6, LT1, Early LS1, Pair
Part Number: WRS-WSLS602EXT
Estimated Ship Date: Today
Estimated Ship Date: Today
Oxygen Sensor Extension Harness, 4 Wire, Square Plug, 24 in. Long, LS2, Pair
Part Number: WRS-WSGTOO2EXT
Estimated Ship Date: Today
Estimated Ship Date: Today
Ground Straps, 5-Point Universal Grounding Kits, 29.500 in. Length, 4-gauge, Tin Coated Copper, Each
Part Number: WRS-WSGNDKIT
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Wiring Harness, Pro Series, 6.0L LS2, Magnum Manual Transmission, 5-pin MAF, EV6 Injectors, Each
Part Number: WRS-WPLS2UGT5MEP
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Wiring Harness, Pro Series, Vortec, 4L80E, 5-pin MAF Sensor, LS1 O2 Sensors, EV6 Injectors, Truck Intake, Each
Part Number: WRS-WPVRTUVT4L80
Not Yet Reviewed
Estimated Ship Date: Jan 20, 2026 if ordered today
Estimated Ship Date: Jan 20, 2026 if ordered today
Wiring Harness, Pro Series, Vortec, 4L80E, 5-pin MAF Sensor, LS1 O2 Sensors, EV6 Injectors, F-Body Intake, Each
Part Number: WRS-WPLS1UVF4L80
Not Yet Reviewed
Estimated Ship Date: Jan 20, 2026 if ordered today
Estimated Ship Date: Jan 20, 2026 if ordered today
Wiring Harness, Pro Series, LS1, 4L60E Auto Transmission, 3-pin MAFS, LS1 O2 Sensors, EV1 Injectors, Each
Part Number: WRS-WPLS1UF4L60
Estimated Ship Date: Jan 19, 2026 if ordered today
Estimated Ship Date: Jan 19, 2026 if ordered today
Wiring Harness, Pro Series, GTO LS1, 4L60E Auto Transmission, 3-pin MAFS, LS2 O2 Sensors, EV1 Injectors, Each
Part Number: WRS-WPLS1UG4L60
Not Yet Reviewed
Estimated Ship Date: Jan 12, 2026 if ordered today
Estimated Ship Date: Jan 12, 2026 if ordered today
Fuel Injection System Wiring Harness, RB26DETT Engine, Multi-Port Injection, Each
Part Number: WRS-WSRB26R32PKG
Not Yet Reviewed
Estimated Ship Date: Jan 12, 2026 if ordered today
Estimated Ship Date: Jan 12, 2026 if ordered today
Engine and Transmission Main Harness, OEM Series, for Nissan, Skyline, R32 GT-R, RB26DETT, Manual Transmission, Kit
Part Number: WRS-RB26R32-MAIN
Not Yet Reviewed
Estimated Ship Date: Jan 19, 2026 if ordered today
Estimated Ship Date: Jan 19, 2026 if ordered today
Ignition Coil Wiring Harness, Smart Coil Conversion, for Nissan, Skyline, R32, R33, for R34 Coil Packs, Each
Part Number: WRS-RB26R34COIL4
Not Yet Reviewed
Estimated Ship Date: Jan 20, 2026 if ordered today
Estimated Ship Date: Jan 20, 2026 if ordered today
COIL HARNESS
Part Number: WRS-PROLS1-COIL
Not Yet Reviewed
Estimated Ship Date: Jan 26, 2026 if ordered today
Estimated Ship Date: Jan 26, 2026 if ordered today
Wiring Harness, Pro Series, 2004 GTO LS1, T56 Manual Transmission, 3-pin MAFS, LS2 O2 Sensors, EV1 Injectors, Each
Part Number: WRS-WPLS1UGT56
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Transmission Harness, OEM Series, Complete Lower/Transmission Harness, for Nissan, Automatic Transmission, Each
Part Number: WRS-SUM00002
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
BRACKET
Part Number: WRS-JZCOILNLNC-S
Not Yet Reviewed
Estimated Ship Date: Jan 12, 2026 if ordered today
Estimated Ship Date: Jan 12, 2026 if ordered today
Fuel Injection Wiring Harness, Pro Series, 4L60E, Chevy, Each
Part Number: WRS-SUM000012
Not Yet Reviewed
Estimated Ship Date: Jan 12, 2026 if ordered today
Estimated Ship Date: Jan 12, 2026 if ordered today
Wiring Harness, Pro Series, LS1, T56 Manual Transmission, 3-pin MAFS, LS1 O2 Sensors, EV1 Injectors, Each
Part Number: WRS-WPLS1UFT56
Not Yet Reviewed
Estimated Ship Date: Jan 12, 2026 if ordered today
Estimated Ship Date: Jan 12, 2026 if ordered today
Wiring Harness, Pro Series, Vortec, T56, 5-pin MAF Sensor, LS1 O2 Sensors, EV6 Injectors, Truck Intake, Each
Part Number: WRS-WPVRTUVTT56
Not Yet Reviewed
Estimated Ship Date: Jan 12, 2026 if ordered today
Estimated Ship Date: Jan 12, 2026 if ordered today
O2 SENSOR EXT HARNESS PAIR
Part Number: WRS-VQ35-O2EXT
Not Yet Reviewed
Estimated Ship Date: Jan 15, 2026 if ordered today
Estimated Ship Date: Jan 15, 2026 if ordered today
Fuel Injection Wiring Harness, Pro Series, T56, Chevy, GMC, Each
Part Number: WRS-PROL9UNIT56
Not Yet Reviewed
Estimated Ship Date: Jan 5, 2026 if ordered today
Estimated Ship Date: Jan 5, 2026 if ordered today
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