HomeEngine > Hardware, Fasteners and FittingsDorman 090-066 Engine Oil Drain Plug
Part #: 090-066

Dorman 090-066 Engine Oil Drain Plug

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12 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Buick, Oldsmobile, and Pontiac, Skylark, Cutlass Calais, and Grand Am
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Reliable Engine Oil Drain Plug for Buick, Oldsmobile, and Pontiac

The Dorman 090-066 engine oil drain plug is designed to provide a secure and leak-free seal for your vehicle's oil pan. Compatible with select Buick Cutlass Calais, Oldsmobile, and Pontiac Grand Am and Skylark models, this steel drain plug ensures proper oil drainage and maintenance.

  • Constructed from durable steel with a silver finish
  • Metric M12-1.75 coarse thread for secure fitment
  • Includes gasket for effective sealing
  • Hex head drive type with 13 mm size for easy installation
  • Package contains 5 oil drain plugs for multiple replacements
  • No special tools required for installation
  • Bolt grade 5.8 for reliable strength

Product Details and Specifications

The Dorman 090-066 oil drain plug features a conventional drain method with a standard oil drain plug design. It measures approximately 0.5 to 0.7 inches in length and has a thread pitch of 1.75, matching the M12-1.75 thread size. The plug is not magnetic and comes with a gasket type seal included to prevent oil leaks. Its hex head drive with 6 socket points allows for straightforward tightening or removal using common hand tools. This drain plug is designed specifically for metric thread systems and does not require any oversized threads or special installation tools.

Compatible Vehicles and Applications

This engine oil drain plug is compatible with various GM vehicles, including Buick Cutlass Calais, Oldsmobile models, and Pontiac Grand Am and Skylark. It is ideal for owners and mechanics seeking a direct replacement part that meets OEM specifications for these vehicles. Using the Dorman 090-066 ensures proper fitment and reliable sealing during oil changes.

  • Prevents oil leaks caused by worn or damaged drain plugs
  • Replaces stripped or corroded drain plugs
  • Helps maintain proper oil drainage during routine maintenance
  • Ensures a secure seal to avoid oil contamination or loss
  • Supports engine longevity by facilitating timely oil changes

Installation Notes and Tips

Installation of the Dorman 090-066 oil drain plug requires no special tools beyond a 13 mm hex socket or wrench. Before installation, ensure the gasket is properly seated to prevent leaks. Tighten the plug to the manufacturer’s recommended torque specification to avoid over-tightening, which can damage the oil pan threads. Regular inspection during oil changes is advised to confirm the plug remains secure and leak-free.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards, providing dependable performance for your vehicle. The 090-066 oil drain plug is backed by Dorman’s quality assurance processes. Please refer to Dorman’s official warranty policy for specific coverage details.

BrandDorman
Part Number090-066
Bolt Grade5.8
ColorSilver
Describe TypeOil Drain Plug Standard
Drain MethodConventional
Gasket Or Seal IncludedYes
Gasket TypeGasket
Head Drive TypeHex
Head Size (SAE/Metric)13 mm
Length0.5
Length0.7
MagneticNo
MaterialSteel
Oversized ThreadNo
Package Contents5 Oil Drain Plugs
SAE or MetricMetric
Socket Points6
Special Tool RequiredNo
Thread Diameter12
Thread Pitch1.75
Thread SizeM12-1.75
Thread TypeCoarse
Threads Per Inch0

This part fits 12 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
1991BuickSkylark2.3LL4N/AM12 x 1.75 Thread; Shank Length (In): 0.5 in; Package Quantity: 5; Dorman - AutoGrade - Boxed; Packaging Type: Box; Thread Size: M12-1.75; Head Size (SAE/Metric): 13 mm
1991OldsmobileCutlass Calais2.3LL4N/AM12 x 1.75 Thread; Shank Length (In): 0.5 in; Package Quantity: 5; Dorman - AutoGrade - Boxed; Packaging Type: Box; Thread Size: M12-1.75; Head Size (SAE/Metric): 13 mm
1991PontiacGrand Am2.3LL4N/AM12 x 1.75 Thread; Shank Length (In): 0.5 in; Package Quantity: 5; Dorman - AutoGrade - Boxed; Packaging Type: Box; Thread Size: M12-1.75; Head Size (SAE/Metric): 13 mm
1990BuickSkylark2.3LL4N/AM12 x 1.75 Thread; Shank Length (In): 0.5 in; Package Quantity: 5; Dorman - AutoGrade - Boxed; Packaging Type: Box; Thread Size: M12-1.75; Head Size (SAE/Metric): 13 mm
1990OldsmobileCutlass Calais2.3LL4N/AM12 x 1.75 Thread; Shank Length (In): 0.5 in; Package Quantity: 5; Dorman - AutoGrade - Boxed; Packaging Type: Box; Thread Size: M12-1.75; Head Size (SAE/Metric): 13 mm
1990PontiacGrand Am2.3LL4N/AM12 x 1.75 Thread; Shank Length (In): 0.5 in; Package Quantity: 5; Dorman - AutoGrade - Boxed; Packaging Type: Box; Thread Size: M12-1.75; Head Size (SAE/Metric): 13 mm
1989BuickSkylark2.3LL4N/AM12 x 1.75 Thread; Shank Length (In): 0.5 in; Package Quantity: 5; Dorman - AutoGrade - Boxed; Packaging Type: Box; Thread Size: M12-1.75; Head Size (SAE/Metric): 13 mm
1989OldsmobileCutlass Calais2.3LL4N/AM12 x 1.75 Thread; Shank Length (In): 0.5 in; Package Quantity: 5; Dorman - AutoGrade - Boxed; Packaging Type: Box; Thread Size: M12-1.75; Head Size (SAE/Metric): 13 mm
1989PontiacGrand Am2.3LL4N/AM12 x 1.75 Thread; Shank Length (In): 0.5 in; Package Quantity: 5; Dorman - AutoGrade - Boxed; Packaging Type: Box; Thread Size: M12-1.75; Head Size (SAE/Metric): 13 mm
1988BuickSkylark2.3LL4N/AM12 x 1.75 Thread; Shank Length (In): 0.5 in; Package Quantity: 5; Dorman - AutoGrade - Boxed; Packaging Type: Box; Thread Size: M12-1.75; Head Size (SAE/Metric): 13 mm
1988OldsmobileCutlass Calais2.3LL4N/AM12 x 1.75 Thread; Shank Length (In): 0.5 in; Package Quantity: 5; Dorman - AutoGrade - Boxed; Packaging Type: Box; Thread Size: M12-1.75; Head Size (SAE/Metric): 13 mm
1988PontiacGrand Am2.3LL4N/AM12 x 1.75 Thread; Shank Length (In): 0.5 in; Package Quantity: 5; Dorman - AutoGrade - Boxed; Packaging Type: Box; Thread Size: M12-1.75; Head Size (SAE/Metric): 13 mm

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

2253568278-24DN090-066

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.