SKU: 8563125931

70-71 Manual TCS Transmission Switch (Pin Terminal) - Out of Stock

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Description

70-71 Manual TCS Transmission Switch (Pin Terminal) - Out of StockReproduction 1970 1971 Corvette TCS transmission switch. Correct for manual transmission equipped Corvettes. Includes "pin" type electrical connection. Switch threads into the transmission providing electrical signal for TCS solenoid on intake manifold. GM Part 3961567 Transmission Controlled Spark (TCS) System controls exhaust emissions by eliminating vacuum advance in the lower forward gears while at operating temperature. The TCS intake manifold

Reproduction 1970-1971 Corvette TCS transmission switch. Correct for manual transmission equipped Corvettes. Includes "pin" type electrical connection. Switch threads into the transmission providing electrical signal for TCS solenoid on intake manifold.

GM Part 3961567

Transmission Controlled Spark (TCS) System controls exhaust emissions by eliminating vacuum advance in the lower forward gears while at operating temperature. The TCS intake manifold solenoid controls vacuum to the distributor's vacuum advance unit. The solenoid determines when, and how much, vacuum to release. Typically, a vacuum line from the carburetor enters the solenoid and another vacuum line exits the solenoid to the distributor vacuum advance unit (some applications have multiple inlet and outlet lines). The TCS solenoid relies on an electrical signal provided by other TCS system switches/senders via an electrical connection on the back or side of the solenoid (Engine Harness or TCS Harness plugs into this connection).

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SKU: 8563125931

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Burja
Draper, US
★★★★★ 4
Good
Size: 89-96158T 2PCS
Good
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 26, 2025
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Patrick TTillery
Carnegie, US
★★★★★ 1
Bad solenoid
Size: 89-96158T 2PCS
One of the cylinders works, and the other cylinder was a bad one. It did not work.
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Reviewed in the United States on August 12, 2025
J
Verified Purchase
Jim M
Lowell, US
★★★★★ 4
Metric Hardware
Size: 89-96158T 1PC
Works fine. This has metric hardware, which does not match the other two relays on my vintage mercury outboard. This is not a quicksilver part
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Reviewed in the United States on August 6, 2025
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Jimmy Snow
Lexington, US
★★★★★ 5
Boat repair
Size: 89-96158T 2PCS
Excellent for price and quality
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Reviewed in the United States on November 1, 2025
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Curtis M
Lexington, US
★★★★★ 5
Fixed the no boat start
Size: 89-96158T 1PC
Fixed my problem so far working good
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 15, 2025

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