Dorman 54218 Coolant Reservoir Cap

In stock
SKU: 591|54218
Confirm Fitment Before You Buy
Not sure it fits? Message Year/Make/Model/Engine (2WD/4WD if applicable) and we’ll help confirm compatibility.
Why buy from Koskowski Automotive?
• 50+ years (since 1972) • Dorman Authorized Seller • Fast shipping • Easy returns
Regular price $17.56
Vehicle Fitment: Use the table below to match your exact configuration. If you don’t see your exact setup, message us before ordering.

Product details

  • SKU 591|54218
  • Barcode 37495889070

Product Description

Cracked or lost the original engine coolant reservoir cap? Replace it seamlessly and effectively with this precisely engineered, direct replacement cap.

  • Direct replacement - this engine coolant reservoir cap directly replaces a cracked or lost original cap
  • Application specific - made to match dimensions of reservoir cap on only certain vehicle years, makes and models
  • Seamless fit - reverse-engineered from the original equipment to fit perfectly
  • Excellent value - a quick, easy replacement that's less expensive than going back to the dealership

Detailed Applications

Year Make Model Configuration Positions Application Notes
2024 Buick Enclave V6 217 3.6L (3564cc)
2024 Buick Envision
2024 Cadillac CT4 L4 166 2.7L (2720cc)
2024 Cadillac CT4 V6 217 3.6L (3564cc)
2024 Cadillac CT5 V6 182 3.0L
2024 Cadillac CT5 V8 376 6.2L (6162cc)
2024 Cadillac Escalade
2024 Cadillac Escalade ESV
2024 Cadillac XT4 L4 122 2.0L (1998cc)
2024 Cadillac XT5 L4 122 2.0L (1998cc)
2024 Cadillac XT5 V6 222 3.6L
2024 Cadillac XT6 L4 122 2.0L (1998cc)
2024 Cadillac XT6 V6 222 3.6L
2024 Chevrolet Blazer L4 122 2.0L (1998cc)
2024 Chevrolet Blazer V6 222 3.6L
2024 Chevrolet Colorado L4 166 2.7L (2720cc)
2024 Chevrolet Corvette V8 333 5.5L (5462cc)
2024 Chevrolet Corvette V8 376 6.2L (6162cc)
2024 Chevrolet Equinox L4 91 1.5L (1490cc)
2024 Chevrolet Malibu L4 91 1.5L (1490cc)
2024 Chevrolet Silverado 1500
2024 Chevrolet Silverado 2500 HD V8 401 6.6L (6571cc)
2024 Chevrolet Silverado 2500 HD V8 403 6.6L (6599cc)
2024 Chevrolet Silverado 3500 HD V8 401 6.6L (6571cc)
2024 Chevrolet Silverado 3500 HD V8 403 6.6L (6599cc)
2024 Chevrolet Suburban
2024 Chevrolet Tahoe
2024 GMC Canyon L4 166 2.7L (2720cc)
2024 GMC Sierra 1500
2024 GMC Sierra 2500 HD V8 401 6.6L (6571cc)
2024 GMC Sierra 2500 HD V8 403 6.6L (6599cc)
2024 GMC Sierra 3500 HD V8 401 6.6L (6571cc)
2024 GMC Sierra 3500 HD V8 403 6.6L (6599cc)
2024 GMC Terrain L4 91 1.5L (1490cc)
2024 GMC Yukon
2024 GMC Yukon XL
2023 Buick Enclave V6 217 3.6L (3564cc)
2023 Buick Envision
2023 Cadillac CT4 L4 166 2.7L (2720cc)
2023 Cadillac CT4 V6 217 3.6L (3564cc)
2023 Cadillac CT5 V6 182 3.0L
2023 Cadillac CT5 V8 376 6.2L (6162cc)
2023 Cadillac Escalade
2023 Cadillac Escalade ESV
2023 Cadillac XT4 L4 122 2.0L (1998cc)
2023 Cadillac XT5 L4 122 2.0L (1998cc)
2023 Cadillac XT5 V6 222 3.6L
2023 Cadillac XT6 L4 122 2.0L (1998cc)
2023 Cadillac XT6 V6 222 3.6L
2023 Chevrolet Blazer L4 122 2.0L (1998cc)
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Product Specifications

Attachment Type: Threaded
Color: Black
Diameter: 60.9 mm
Length (In): 2.4 in
Material: Plastic
Maximum Pressure Rating: 20 PSI
Package Contents: 1 Coolant Cap
Package Quantity: 1
Pressure Release Lever: No
Pressurized: Yes
Type: Twist
Vented: Yes
Width (in): 2.4 in
Packaging Type: Box

OE Numbers

DIRECT OE CROSS
13502353 GENERAL MOTORS
13545896 GENERAL MOTORS