GM OEM Oil Pressure Switch (GM 25036378 / D1816)

Brand-new, unused OEM GM oil pressure switch — a true GM-era piece still in its original box. This switch is used on Turbo Buicks for the oil warning light and the factory fuel pump backup circuit. Perfect for restorations, OEM-correct repairs, or keeping a brand-new GM sender on the shelf as insurance.

🔵 Blue Dot: Brand new, and/or possibly only open-box items that are ready to roll. Original packaging might not make the cut, but the quality is spot-on. Save 10 to 25% off retail. 

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The Fine Print All Sales Final: No take-backs, refunds, or exchanges. 

As-Is Condition: We inspect every part before it hits the listing, but we recommend you double-check compatibility with your project. 

Your Acknowledgment: By purchasing from Turbo 6 Parts, you agree to these terms.

Specifications:
• Brand: GM / ACDelco
• GM Part Number: 25036378
• ACDelco Code: D1816
• Type: Oil Pressure Switch
• Connector: 2-pin GM spade-style
• Thread: 1/4" NPT
• Application: 1986–1987 Buick Grand National, Turbo-T, T-Type, GNX
• Includes: Original GM box with aging from long-term storage