Transmission Harnesses

Wiring Harness, Atomic TCU, GM, 4L60E/4L65E/4L80E/4L85E/4L70E/4L75E, Each

Part Number: MSD-2770

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 4/13/2026 if shipped by air

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Transmission Harness, Replacement, 20-Pin Pigtail, GM Automatic Transmission, Gray Connector, 12 in. Wire Leads, Butt-Style Connectors, Each

Part Number: FLE-S0507

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 4/13/2026 if shipped by air

Harness TCU Distributor

Part Number: TCI-377100

Not Yet Reviewed

Estimated Ship Date: May 19, 2026 if ordered today

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Wiring Harness, Atomic TCU, GM, 4L70E, Each

Part Number: MSD-2771

Not Yet Reviewed

Estimated Ship Date: Apr 27, 2026 if ordered today

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Transmission Harnesses, Atomic Transmission Control Module Harnesses, 4 ft. Extension for MSD Atomic Transmission Controllers Only, Ford, GM, Each

Part Number: MSD-27621

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Apr 27, 2026 if ordered today

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