The ACDelco GM Original Equipment RC27 Radiator Cap is expertly designed to seal and stabilize your engine's cooling system. Engineered with precision and rigorously tested by General Motors, this cap guarantees the reliability and performance synonymous with ACDelco parts. With a durable plastic-coated stainless steel construction, it ensures longevity and efficient pressure retention for optimal engine cooling across a vast range of GM makes and models, including Chevrolet, Buick, GMC, and Cadillac. Protecting your engine from overheating is crucial, and the ACDelco RC27 delivers superior performance as it maintains the necessary pressure within the cooling system. If you're experiencing issues such as fluctuations in engine temperature or coolant leakage, it may be time to replace your radiator cap. Incorporating the RC27 into your regular maintenance routine not only preserves your vehicle's health but also enhances its performance. Consider pairing it with a coolant flush or replacing worn hoses for comprehensive cooling system care.

• Designed to GM's strict standards for superior engine cooling
• Ensures reliable seal to maintain perfect cooling pressure
• Crafted from durable plastic-coated stainless steel
• OE fit for various Buick, Chevrolet, GMC, Cadillac models
• Backed by General Motors' rigorous testing protocols
• Assists in preventing engine overheating and coolant loss

Cap Depth:	0.96
Material:	Plastic Covered Stainless Steel
Maximum Pressure:	15
Coolant Recovery System:	Yes
Meets or Exceeds OEM Specifications:	Yes
Filler Neck Inside Diameter:	46.1
Filler Neck Outside Diameter:	56.77
Shape:	Round
Weight:	0.07 lb

• 1969-1976 Cadillac Calais
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• 1987 Chevrolet V10
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• 1987-1988 Chevrolet V20 Suburban
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• 1987 GMC R1500
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• 1987-1989 GMC R2500
• 1987-1991 GMC R2500 Suburban
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• 1987 GMC V1500
• 1987-1991 GMC V1500 Suburban
• 1987 GMC V2500
• 1987-1991 GMC V2500 Suburban
• 1987-1991 GMC V3500
• 1987-1989 Pontiac Safari
• 1988-1991 Buick Reatta
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• 1988-1999 Chevrolet C2500
• 1988-1999 Chevrolet C3500
• 1988-1998 Chevrolet K1500
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