Dorman 555-018 Expansion Plug

In stock
SKU: 591|555018
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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 $15.84
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|555018
  • Barcode 19495555186

Product Description

This engine expansion plug is designed to match the fit and function of the original part on specified vehicles. Made of quality materials, it is engineered for reliable performance.

  • Direct replacement - this engine expansion plug matches the fit and function of the factory part on specified years, makes and models
  • Ideal solution - this plug is a reliable replacement for an original part that is missing or has failed due to fatigue
  • Durable construction - this part is made from quality materials to ensure reliable performance and long service life
  • Trustworthy quality - backed by team of product experts in the United States and more than a century of automotive experience

Detailed Applications

Year Make Model Configuration Positions Application Notes
2005 Buick LaCrosse V6 231 3.8L (3800cc) 1 Required; w/Balance Shaft; 1 In.; Shallow Cup Type
2005 Buick LeSabre 1 Required; w/Balance Shaft; 1 In.; Shallow Cup Type
2005 Buick Park Avenue 1 Required; w/Balance Shaft; 1 In.; Shallow Cup Type
2005 Cadillac CTS V8 346 5.7L As Req; 1 In.; Shallow Cup Type
2005 Chevrolet Impala V6 231 3.8L (3800cc) As Req; 1 In.; Shallow Cup Type
2005 Chevrolet Monte Carlo V6 231 3.8L (3800cc) As Req; 1 In.; Shallow Cup Type
2005 Dodge Ram 2500 L6 359 5.9L As Req; 1 In.; Shallow Cup Type
2005 Dodge Ram 3500 L6 359 5.9L As Req; 1 In.; Shallow Cup Type
2005 Pontiac Grand Prix V6 231 3.8L (3800cc) As Req; w/Balance Shaft; 1 In.; Shallow Cup Type
2005 Pontiac GTO As Req; 1 In.; Shallow Cup Type
2004 Buick LeSabre 1 Required; w/Balance Shaft; 1 In.; Shallow Cup Type
2004 Buick Park Avenue 1 Required; w/Balance Shaft; 1 In.; Shallow Cup Type
2004 Buick Regal 1 Required; w/Balance Shaft; 1 In.; Shallow Cup Type
2004 Cadillac CTS V8 346 5.7L As Req; 1 In.; Shallow Cup Type
2004 Chevrolet Corvette V8 350 5.7L As Req; 1 In.; Shallow Cup Type
2004 Chevrolet Impala V6 231 3.8L (3800cc) As Req; 1 In.; Shallow Cup Type
2004 Chevrolet Monte Carlo V6 231 3.8L (3800cc) As Req; 1 In.; Shallow Cup Type
2004 Dodge Ram 2500 L6 359 5.9L As Req; 1 In.; Shallow Cup Type
2004 Dodge Ram 3500 L6 359 5.9L As Req; 1 In.; Shallow Cup Type
2004 Pontiac Grand Prix As Req; w/Balance Shaft; 1 In.; Shallow Cup Type
2003 Buick LeSabre 1 Required; w/Balance Shaft; 1 In.; Shallow Cup Type
2003 Buick Park Avenue 1 Required; w/Balance Shaft; 1 In.; Shallow Cup Type
2003 Buick Regal 1 Required; w/Balance Shaft; 1 In.; Shallow Cup Type
2003 Chevrolet Corvette V8 350 5.7L As Req; 1 In.; Shallow Cup Type
2003 Chevrolet Impala V6 231 3.8L (3800cc) As Req; 1 In.; Shallow Cup Type
2003 Chevrolet Monte Carlo V6 231 3.8L (3800cc) As Req; 1 In.; Shallow Cup Type
2003 Dodge Ram 2500 L6 359 5.9L As Req; 1 In.; Shallow Cup Type
2003 Dodge Ram 2500 V10 488 8.0L (7990cc) As Req; 1 In.; Shallow Cup Type
2003 Dodge Ram 3500 L6 359 5.9L As Req; 1 In.; Shallow Cup Type
2003 Dodge Ram 3500 V10 488 8.0L (7990cc) As Req; 1 In.; Shallow Cup Type
2003 Dodge Viper V10 505 8.3L (8275cc) As Req; 1 In.; Shallow Cup Type
2003 Pontiac Bonneville V6 231 3.8L (3800cc) As Req; w/Balance Shaft; 1 In.; Shallow Cup Type
2003 Pontiac Grand Prix V6 231 3.8L (3800cc) As Req; w/Balance Shaft; 1 In.; Shallow Cup Type
2002 Buick LeSabre 1 Required; w/Balance Shaft; 1 In.; Shallow Cup Type
2002 Buick Park Avenue 1 Required; w/Balance Shaft; 1 In.; Shallow Cup Type
2002 Buick Regal 1 Required; w/Balance Shaft; 1 In.; Shallow Cup Type
2002 Chevrolet Camaro V6 231 3.8L (3800cc) As Req; 1 In.; Shallow Cup Type
2002 Chevrolet Camaro V8 350 5.7L As Req; 1 In.; Shallow Cup Type
2002 Chevrolet Corvette V8 350 5.7L As Req; 1 In.; Shallow Cup Type
2002 Chevrolet Impala V6 231 3.8L (3800cc) As Req; 1 In.; Shallow Cup Type
2002 Chevrolet Monte Carlo V6 231 3.8L (3800cc) As Req; 1 In.; Shallow Cup Type
2002 Dodge Ram 2500 L6 359 5.9L As Req; 1 In.; Shallow Cup Type
2002 Dodge Ram 2500 V10 488 8.0L (7990cc) As Req; 1 In.; Shallow Cup Type
2002 Dodge Ram 3500 L6 359 5.9L As Req; 1 In.; Shallow Cup Type
2002 Dodge Ram 3500 V10 488 8.0L (7990cc) As Req; 1 In.; Shallow Cup Type
2002 Dodge Viper As Req; 1 In.; Shallow Cup Type
2002 Pontiac Bonneville V6 231 3.8L (3800cc) As Req; w/Balance Shaft; 1 In.; Shallow Cup Type
2002 Pontiac Firebird V8 350 5.7L As Req; 1 In.; Shallow Cup Type
2002 Pontiac Grand Prix V6 231 3.8L (3800cc) As Req; w/Balance Shaft; 1 In.; Shallow Cup Type
2001 Buick LeSabre 1 Required; w/Balance Shaft; 1 In.; Shallow Cup Type
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Product Specifications

Describe Type: Cup Type
Material: Steel
Maximum Diameter: 1.021 in
Minimum Diameter: 1.007 in
Package Contents: Expansion Plug
Packaging Type: Box
Package Quantity: 10
Brand: Dorman - AutoGrade - Boxed

OE Numbers

DIRECT OE CROSS
10044811 GENERAL MOTORS
2806018 CHRYSLER
3178449 AMERICAN MOTORS
359284-S FORD MOTOR COMPANY
4429735 CHRYSLER
445360-C1 NAVISTAR
9427698 GENERAL MOTORS
C8DZ 6026-A FORD MOTOR COMPANY
J3178449 CHRYSLER