HomeEngine > Cylinder Block ComponentsSealed Power W369P Engine Piston
Part #: W369P

Sealed Power W369P Engine Piston

⚙️ 48 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Oldsmobile, 98, Custom Cruiser, Cutlass, Cutlass Salon, Cutlass Supreme, Cutlass Tiara, Delta 88, Toronado, Vista Cruiser, F85, 442, and Delmont 88
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Sealed Power Engine Piston for Oldsmobile Vehicles

The Sealed Power W369P engine piston is designed for reliable performance in select Oldsmobile models. Engineered to meet standard size specifications, this cast piston offers precise fitment and durability for applications including the Oldsmobile Cutlass, Delta 88, and Toronado.

  • Standard bore size of 4.1250 inches (104.8 mm)
  • Recessed head design with .120 inch depth and 2.940 inch diameter
  • Compression ratio of 9.75:1 for balanced engine performance
  • Pin diameter of 0.9806 inches (24.907 mm) with 0.06 inch offset
  • Includes two 5/64 inch width rings and one 3/16 inch width ring
  • Minimum clearance of 0.0015 inches at 2.470 inches from top of head
  • Constructed from durable cast material for longevity

Technical Details and Specifications

The W369P piston features a recessed head type with a .120 inch deep recess and a 2.940 inch diameter, supporting a compression ratio of 9.75:1. This design helps optimize combustion efficiency in compatible Oldsmobile engines. The piston bore measures 4.1250 inches (104.8 mm), matching standard size requirements for precise cylinder fitment. The pin diameter is 0.9806 inches (24.907 mm) with a 0.06 inch offset, which aids in reducing piston slap and improving engine smoothness. The piston rings include two rings at 5/64 inch width and one ring at 3/16 inch width, ensuring effective sealing and oil control.

Compatible Oldsmobile Models

This engine piston is compatible with a range of Oldsmobile vehicles, including:

  • Oldsmobile 98
  • Oldsmobile Custom Cruiser
  • Oldsmobile Cutlass, Cutlass Salon, and Cutlass Supreme
  • Oldsmobile Delta 88
  • Oldsmobile Toronado

Common Applications and Problem Solving

The Sealed Power W369P piston is used primarily in engine rebuilds and repairs to address issues such as:

  • Worn or damaged pistons causing loss of compression
  • Engine knocking or piston slap due to improper fitment
  • Reduced engine performance from compromised piston rings
  • Oil consumption problems related to piston ring sealing
  • Restoring engine efficiency in standard bore Oldsmobile engines

Installation Notes and Tips

  • Verify bore size and piston specifications match engine requirements before installation
  • Ensure proper clearance of 0.0015 inches at 2.470 inches from the top of the piston head
  • Use appropriate ring compressors and lubricants during assembly
  • Check pin diameter and offset compatibility with connecting rods
  • Follow manufacturer torque specifications for piston pin and connecting rod installation

Quality Assurance and Warranty

Sealed Power pistons are manufactured from cast material to meet OEM standards for durability and performance. The W369P piston undergoes rigorous quality control to ensure dimensional accuracy and material integrity. While specific warranty details may vary, Sealed Power products typically include coverage against manufacturing defects. Consult product documentation for exact warranty terms.

BrandSealed Power
Part NumberW369P
Bore (Inch)4.1250
Bore (mm)104.8000
Compression Distance1.725
Head Illustration28
Head TypeRecessed Head .120 deep x 2.940 dia. - 9.75:1 C.R.
Minimum Clearance0.0015 @ 2.470 from top of head
Note 1Standard Size
Note 2Single Piston
Package AlertSingle Piston
Part MaterialCast
Pin Diameter (Inch)0.9806
Pin Diameter (mm)24.907
Pin Offset (Inch)0.06
Pin Offset (MM)1.524
Ring 1 Qty2
Ring 1 Width5/64
Ring 2 Qty1
Ring 2 Width3/16
Standard SizeStandard

This part fits 48 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
1976Oldsmobile987.5LV8N/AHigh Compression; 1 Piston; 3 Ring Piston; 1.725 (in) Compression Distance; 0.120 (in) Deep x 2.940 (in) Diameter Recess; Cast Iron; with 9.75 :1 Compression Ratio; Ring Groove Widths: 5/64 (in) , 5/64 (in) , 3/16 (in); Sold Individually; Standard
1976OldsmobileCustom Cruiser7.5LV8N/AHigh Compression; 1 Piston; 3 Ring Piston; 1.725 (in) Compression Distance; 0.120 (in) Deep x 2.940 (in) Diameter Recess; Cast Iron; with 9.75 :1 Compression Ratio; Ring Groove Widths: 5/64 (in) , 5/64 (in) , 3/16 (in); Sold Individually; Standard
1976OldsmobileCutlass7.5LV8N/AHigh Compression; 1 Piston; 3 Ring Piston; 1.725 (in) Compression Distance; 0.120 (in) Deep x 2.940 (in) Diameter Recess; Cast Iron; with 9.75 :1 Compression Ratio; Ring Groove Widths: 5/64 (in) , 5/64 (in) , 3/16 (in); Sold Individually; Standard
1976OldsmobileCutlass Salon7.5LV8N/AHigh Compression; 1 Piston; 3 Ring Piston; 1.725 (in) Compression Distance; 0.120 (in) Deep x 2.940 (in) Diameter Recess; Cast Iron; with 9.75 :1 Compression Ratio; Ring Groove Widths: 5/64 (in) , 5/64 (in) , 3/16 (in); Sold Individually; Standard
1976OldsmobileCutlass Supreme7.5LV8N/AHigh Compression; 1 Piston; 3 Ring Piston; 1.725 (in) Compression Distance; 0.120 (in) Deep x 2.940 (in) Diameter Recess; Cast Iron; with 9.75 :1 Compression Ratio; Ring Groove Widths: 5/64 (in) , 5/64 (in) , 3/16 (in); Sold Individually; Standard
1976OldsmobileDelta 887.5LV8N/AHigh Compression; 1 Piston; 3 Ring Piston; 1.725 (in) Compression Distance; 0.120 (in) Deep x 2.940 (in) Diameter Recess; Cast Iron; with 9.75 :1 Compression Ratio; Ring Groove Widths: 5/64 (in) , 5/64 (in) , 3/16 (in); Sold Individually; Standard
1976OldsmobileToronado7.5LV8N/AHigh Compression; 1 Piston; 3 Ring Piston; 1.725 (in) Compression Distance; 0.120 (in) Deep x 2.940 (in) Diameter Recess; Cast Iron; with 9.75 :1 Compression Ratio; Ring Groove Widths: 5/64 (in) , 5/64 (in) , 3/16 (in); Sold Individually; Standard
1975Oldsmobile987.5LV8N/AHigh Compression; 1 Piston; 3 Ring Piston; 1.725 (in) Compression Distance; 0.120 (in) Deep x 2.940 (in) Diameter Recess; Cast Iron; with 9.75 :1 Compression Ratio; Ring Groove Widths: 5/64 (in) , 5/64 (in) , 3/16 (in); Sold Individually; Standard
1975OldsmobileCustom Cruiser7.5LV8N/AHigh Compression; 1 Piston; 3 Ring Piston; 1.725 (in) Compression Distance; 0.120 (in) Deep x 2.940 (in) Diameter Recess; Cast Iron; with 9.75 :1 Compression Ratio; Ring Groove Widths: 5/64 (in) , 5/64 (in) , 3/16 (in); Sold Individually; Standard
1975OldsmobileCutlass7.5LV8N/AHigh Compression; 1 Piston; 3 Ring Piston; 1.725 (in) Compression Distance; 0.120 (in) Deep x 2.940 (in) Diameter Recess; Cast Iron; with 9.75 :1 Compression Ratio; Ring Groove Widths: 5/64 (in) , 5/64 (in) , 3/16 (in); Sold Individually; Standard
1975OldsmobileCutlass Salon7.5LV8N/AHigh Compression; 1 Piston; 3 Ring Piston; 1.725 (in) Compression Distance; 0.120 (in) Deep x 2.940 (in) Diameter Recess; Cast Iron; with 9.75 :1 Compression Ratio; Ring Groove Widths: 5/64 (in) , 5/64 (in) , 3/16 (in); Sold Individually; Standard
1975OldsmobileCutlass Supreme7.5LV8N/AHigh Compression; 1 Piston; 3 Ring Piston; 1.725 (in) Compression Distance; 0.120 (in) Deep x 2.940 (in) Diameter Recess; Cast Iron; with 9.75 :1 Compression Ratio; Ring Groove Widths: 5/64 (in) , 5/64 (in) , 3/16 (in); Sold Individually; Standard
1975OldsmobileDelta 887.5LV8N/AHigh Compression; 1 Piston; 3 Ring Piston; 1.725 (in) Compression Distance; 0.120 (in) Deep x 2.940 (in) Diameter Recess; Cast Iron; with 9.75 :1 Compression Ratio; Ring Groove Widths: 5/64 (in) , 5/64 (in) , 3/16 (in); Sold Individually; Standard
1975OldsmobileToronado7.5LV8N/AHigh Compression; 1 Piston; 3 Ring Piston; 1.725 (in) Compression Distance; 0.120 (in) Deep x 2.940 (in) Diameter Recess; Cast Iron; with 9.75 :1 Compression Ratio; Ring Groove Widths: 5/64 (in) , 5/64 (in) , 3/16 (in); Sold Individually; Standard
1974Oldsmobile987.5LV8N/AHigh Compression; 1 Piston; 3 Ring Piston; 1.725 (in) Compression Distance; 0.120 (in) Deep x 2.940 (in) Diameter Recess; Cast Iron; with 9.75 :1 Compression Ratio; Ring Groove Widths: 5/64 (in) , 5/64 (in) , 3/16 (in); Sold Individually; Standard
1974OldsmobileCustom Cruiser7.5LV8N/AHigh Compression; 1 Piston; 3 Ring Piston; 1.725 (in) Compression Distance; 0.120 (in) Deep x 2.940 (in) Diameter Recess; Cast Iron; with 9.75 :1 Compression Ratio; Ring Groove Widths: 5/64 (in) , 5/64 (in) , 3/16 (in); Sold Individually; Standard
1974OldsmobileCutlass7.5LV8N/AHigh Compression; 1 Piston; 3 Ring Piston; 1.725 (in) Compression Distance; 0.120 (in) Deep x 2.940 (in) Diameter Recess; Cast Iron; with 9.75 :1 Compression Ratio; Ring Groove Widths: 5/64 (in) , 5/64 (in) , 3/16 (in); Sold Individually; Standard
1974OldsmobileCutlass Supreme7.5LV8N/AHigh Compression; 1 Piston; 3 Ring Piston; 1.725 (in) Compression Distance; 0.120 (in) Deep x 2.940 (in) Diameter Recess; Cast Iron; with 9.75 :1 Compression Ratio; Ring Groove Widths: 5/64 (in) , 5/64 (in) , 3/16 (in); Sold Individually; Standard
1974OldsmobileDelta 887.5LV8N/AHigh Compression; 1 Piston; 3 Ring Piston; 1.725 (in) Compression Distance; 0.120 (in) Deep x 2.940 (in) Diameter Recess; Cast Iron; with 9.75 :1 Compression Ratio; Ring Groove Widths: 5/64 (in) , 5/64 (in) , 3/16 (in); Sold Individually; Standard
1974OldsmobileToronado7.5LV8N/AHigh Compression; 1 Piston; 3 Ring Piston; 1.725 (in) Compression Distance; 0.120 (in) Deep x 2.940 (in) Diameter Recess; Cast Iron; with 9.75 :1 Compression Ratio; Ring Groove Widths: 5/64 (in) , 5/64 (in) , 3/16 (in); Sold Individually; Standard
1973Oldsmobile987.5LV8N/AHigh Compression; 1 Piston; 3 Ring Piston; 1.725 (in) Compression Distance; 0.120 (in) Deep x 2.940 (in) Diameter Recess; Cast Iron; with 9.75 :1 Compression Ratio; Ring Groove Widths: 5/64 (in) , 5/64 (in) , 3/16 (in); Sold Individually; Standard
1973OldsmobileCustom Cruiser7.5LV8N/AHigh Compression; 1 Piston; 3 Ring Piston; 1.725 (in) Compression Distance; 0.120 (in) Deep x 2.940 (in) Diameter Recess; Cast Iron; with 9.75 :1 Compression Ratio; Ring Groove Widths: 5/64 (in) , 5/64 (in) , 3/16 (in); Sold Individually; Standard
1973OldsmobileCutlass7.5LV8N/AHigh Compression; 1 Piston; 3 Ring Piston; 1.725 (in) Compression Distance; 0.120 (in) Deep x 2.940 (in) Diameter Recess; Cast Iron; with 9.75 :1 Compression Ratio; Ring Groove Widths: 5/64 (in) , 5/64 (in) , 3/16 (in); Sold Individually; Standard
1973OldsmobileCutlass Supreme7.5LV8N/AHigh Compression; 1 Piston; 3 Ring Piston; 1.725 (in) Compression Distance; 0.120 (in) Deep x 2.940 (in) Diameter Recess; Cast Iron; with 9.75 :1 Compression Ratio; Ring Groove Widths: 5/64 (in) , 5/64 (in) , 3/16 (in); Sold Individually; Standard
1973OldsmobileDelta 887.5LV8N/AHigh Compression; 1 Piston; 3 Ring Piston; 1.725 (in) Compression Distance; 0.120 (in) Deep x 2.940 (in) Diameter Recess; Cast Iron; with 9.75 :1 Compression Ratio; Ring Groove Widths: 5/64 (in) , 5/64 (in) , 3/16 (in); Sold Individually; Standard
1973OldsmobileToronado7.5LV8N/AHigh Compression; 1 Piston; 3 Ring Piston; 1.725 (in) Compression Distance; 0.120 (in) Deep x 2.940 (in) Diameter Recess; Cast Iron; with 9.75 :1 Compression Ratio; Ring Groove Widths: 5/64 (in) , 5/64 (in) , 3/16 (in); Sold Individually; Standard
1972Oldsmobile987.5LV8N/AHigh Compression; 1 Piston; 3 Ring Piston; 1.725 (in) Compression Distance; 0.120 (in) Deep x 2.940 (in) Diameter Recess; Cast Iron; with 9.75 :1 Compression Ratio; Ring Groove Widths: 5/64 (in) , 5/64 (in) , 3/16 (in); Sold Individually; Standard
1972OldsmobileCustom Cruiser7.5LV8N/AHigh Compression; 1 Piston; 3 Ring Piston; 1.725 (in) Compression Distance; 0.120 (in) Deep x 2.940 (in) Diameter Recess; Cast Iron; with 9.75 :1 Compression Ratio; Ring Groove Widths: 5/64 (in) , 5/64 (in) , 3/16 (in); Sold Individually; Standard
1972OldsmobileCutlass7.5LV8N/AHigh Compression; 1 Piston; 3 Ring Piston; 1.725 (in) Compression Distance; 0.120 (in) Deep x 2.940 (in) Diameter Recess; Cast Iron; with 9.75 :1 Compression Ratio; Ring Groove Widths: 5/64 (in) , 5/64 (in) , 3/16 (in); Sold Individually; Standard
1972OldsmobileCutlass Supreme7.5LV8N/AHigh Compression; 1 Piston; 3 Ring Piston; 1.725 (in) Compression Distance; 0.120 (in) Deep x 2.940 (in) Diameter Recess; Cast Iron; with 9.75 :1 Compression Ratio; Ring Groove Widths: 5/64 (in) , 5/64 (in) , 3/16 (in); Sold Individually; Standard
1972OldsmobileDelta 887.5LV8N/AHigh Compression; 1 Piston; 3 Ring Piston; 1.725 (in) Compression Distance; 0.120 (in) Deep x 2.940 (in) Diameter Recess; Cast Iron; with 9.75 :1 Compression Ratio; Ring Groove Widths: 5/64 (in) , 5/64 (in) , 3/16 (in); Sold Individually; Standard
1972OldsmobileToronado7.5LV8N/AHigh Compression; 1 Piston; 3 Ring Piston; 1.725 (in) Compression Distance; 0.120 (in) Deep x 2.940 (in) Diameter Recess; Cast Iron; with 9.75 :1 Compression Ratio; Ring Groove Widths: 5/64 (in) , 5/64 (in) , 3/16 (in); Sold Individually; Standard
1971Oldsmobile987.5LV8N/AHigh Compression; 1 Piston; 3 Ring Piston; 1.725 (in) Compression Distance; 0.120 (in) Deep x 2.940 (in) Diameter Recess; Cast Iron; with 9.75 :1 Compression Ratio; Ring Groove Widths: 5/64 (in) , 5/64 (in) , 3/16 (in); Sold Individually; Standard
1971OldsmobileCustom Cruiser7.5LV8N/AHigh Compression; 1 Piston; 3 Ring Piston; 1.725 (in) Compression Distance; 0.120 (in) Deep x 2.940 (in) Diameter Recess; Cast Iron; with 9.75 :1 Compression Ratio; Ring Groove Widths: 5/64 (in) , 5/64 (in) , 3/16 (in); Sold Individually; Standard
1971OldsmobileCutlass7.5LV8N/AHigh Compression; 1 Piston; 3 Ring Piston; 1.725 (in) Compression Distance; 0.120 (in) Deep x 2.940 (in) Diameter Recess; Cast Iron; with 9.75 :1 Compression Ratio; Ring Groove Widths: 5/64 (in) , 5/64 (in) , 3/16 (in); Sold Individually; Standard
1971OldsmobileCutlass Supreme7.5LV8N/AHigh Compression; 1 Piston; 3 Ring Piston; 1.725 (in) Compression Distance; 0.120 (in) Deep x 2.940 (in) Diameter Recess; Cast Iron; with 9.75 :1 Compression Ratio; Ring Groove Widths: 5/64 (in) , 5/64 (in) , 3/16 (in); Sold Individually; Standard
1971OldsmobileDelta 887.5LV8N/AHigh Compression; 1 Piston; 3 Ring Piston; 1.725 (in) Compression Distance; 0.120 (in) Deep x 2.940 (in) Diameter Recess; Cast Iron; with 9.75 :1 Compression Ratio; Ring Groove Widths: 5/64 (in) , 5/64 (in) , 3/16 (in); Sold Individually; Standard
1971OldsmobileToronado7.5LV8N/AHigh Compression; 1 Piston; 3 Ring Piston; 1.725 (in) Compression Distance; 0.120 (in) Deep x 2.940 (in) Diameter Recess; Cast Iron; with 9.75 :1 Compression Ratio; Ring Groove Widths: 5/64 (in) , 5/64 (in) , 3/16 (in); Sold Individually; Standard
1970Oldsmobile987.5LV8N/AHigh Compression; 1 Piston; 3 Ring Piston; 1.725 (in) Compression Distance; 0.120 (in) Deep x 2.940 (in) Diameter Recess; Cast Iron; with 9.75 :1 Compression Ratio; Ring Groove Widths: 5/64 (in) , 5/64 (in) , 3/16 (in); Sold Individually; Standard
1970OldsmobileCutlass7.5LV8N/AHigh Compression; 1 Piston; 3 Ring Piston; 1.725 (in) Compression Distance; 0.120 (in) Deep x 2.940 (in) Diameter Recess; Cast Iron; with 9.75 :1 Compression Ratio; Ring Groove Widths: 5/64 (in) , 5/64 (in) , 3/16 (in); Sold Individually; Standard
1970OldsmobileDelta 887.5LV8N/AHigh Compression; 1 Piston; 3 Ring Piston; 1.725 (in) Compression Distance; 0.120 (in) Deep x 2.940 (in) Diameter Recess; Cast Iron; with 9.75 :1 Compression Ratio; Ring Groove Widths: 5/64 (in) , 5/64 (in) , 3/16 (in); Sold Individually; Standard
1970OldsmobileToronado7.5LV8N/AHigh Compression; 1 Piston; 3 Ring Piston; 1.725 (in) Compression Distance; 0.120 (in) Deep x 2.940 (in) Diameter Recess; Cast Iron; with 9.75 :1 Compression Ratio; Ring Groove Widths: 5/64 (in) , 5/64 (in) , 3/16 (in); Sold Individually; Standard
1969Oldsmobile987.5LV8N/AHigh Compression; 1 Piston; 3 Ring Piston; 1.725 (in) Compression Distance; 0.120 (in) Deep x 2.940 (in) Diameter Recess; Cast Iron; with 9.75 :1 Compression Ratio; Ring Groove Widths: 5/64 (in) , 5/64 (in) , 3/16 (in); Sold Individually; Standard
1969OldsmobileDelta 887.5LV8N/AHigh Compression; 1 Piston; 3 Ring Piston; 1.725 (in) Compression Distance; 0.120 (in) Deep x 2.940 (in) Diameter Recess; Cast Iron; with 9.75 :1 Compression Ratio; Ring Groove Widths: 5/64 (in) , 5/64 (in) , 3/16 (in); Sold Individually; Standard
1969OldsmobileToronado7.5LV8N/AHigh Compression; 1 Piston; 3 Ring Piston; 1.725 (in) Compression Distance; 0.120 (in) Deep x 2.940 (in) Diameter Recess; Cast Iron; with 9.75 :1 Compression Ratio; Ring Groove Widths: 5/64 (in) , 5/64 (in) , 3/16 (in); Sold Individually; Standard
1968Oldsmobile987.5LV8N/AHigh Compression; 1 Piston; 3 Ring Piston; 1.725 (in) Compression Distance; 0.120 (in) Deep x 2.940 (in) Diameter Recess; Cast Iron; with 9.75 :1 Compression Ratio; Ring Groove Widths: 5/64 (in) , 5/64 (in) , 3/16 (in); Sold Individually; Standard
1968OldsmobileDelta 887.5LV8N/AHigh Compression; 1 Piston; 3 Ring Piston; 1.725 (in) Compression Distance; 0.120 (in) Deep x 2.940 (in) Diameter Recess; Cast Iron; with 9.75 :1 Compression Ratio; Ring Groove Widths: 5/64 (in) , 5/64 (in) , 3/16 (in); Sold Individually; Standard
1968OldsmobileToronado7.5LV8N/AHigh Compression; 1 Piston; 3 Ring Piston; 1.725 (in) Compression Distance; 0.120 (in) Deep x 2.940 (in) Diameter Recess; Cast Iron; with 9.75 :1 Compression Ratio; Ring Groove Widths: 5/64 (in) , 5/64 (in) , 3/16 (in); Sold Individually; Standard

* 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:

16311747P224174739866640056140056240056340056491631961PL3078FP2056AXP514P514STDZ9415Z9415STD

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