1984-1996 RC27 Radiator Cap ACDelco 10409635 - OEM Number(s) (10409635)
Maintains proper cooling system pressure to prevent overheating and coolant loss.
Replace your missing or worn radiator cap with this direct-fit ACDelco RC27 unit for your C4 Corvette. Designed to seal the cooling system and regulate pressure, this cap ensures reliable performance under demanding conditions. With GM reference number 10409635, it provides the same fit, function, and durability as the factory-installed original.
Whether restoring factory authenticity or simply ensuring safe operation, this RC27 cap is the OE-quality solution trusted by Corvette enthusiasts.
Fits the Following Corvette Models
1984 C4 Corvette
1991–1996 C4 Corvette
Material/Finish
OEM-quality construction steel.
Dimensions
Features/Benefits
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Direct-fit ACDelco RC27 radiator cap for Corvette cooling systems
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Maintains system pressure for reliable engine performance
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Prevents coolant loss and protects against overheating
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Genuine OE-quality construction for authenticity and durability
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GM reference part number 10409635
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Sold individually, 1 required per Corvette
Because Details Matter
Turn the cap and feel it lock into place—firm, secure, and ready to protect your Corvette’s engine. Small parts make a big difference in performance, because details matter.
Also known under these part numbers: (For reference only)
- 036666946543
- 10409635
- 244425
- E23948
- RC27