86.50 mm Bore - -22.50 CC Volume - 1.270 in. Comp Height
Diamond's years of working alongside top sport compact race teams have helped generate an exceptionally robust line of sport compact pistons. Race proven designs are combined with precision CNC machining, strong 2618 forged aluminum, and premium Trend Performance wrist pins to deliver unmatched durability and performance. Whether you're looking more power, boost readiness, or chasing records and win lights on the racetrack, Diamond's mild-to-wild sport compact line is ready to help you get there. Don't see the exact part you need in our catalog' No problem, we can custom make you a piston to your exact specifications.
  • 3D milling on piston crowns for ready to install finish
  • Premium 1.0mm x 1.2mm x 2.8mm ring package included
  • Oversized valve pockets - for larger than stock valve sizes
  • Valve pocket depth: 0.225" intake and .225" exhaust
  • 2618 material for High HP-NOS-Boost applications
  • Offset pins for quiet operation
  • Moly skirt coating for friction loss and skirt wear protection
  • Side gas ports for better ring seal
  • Ratios figured for .068 head gasket @ 8.503 deck height
  • Top ring down dimension: .345"
  • Premium 8620 .180W wrist pins chamfered for roundwire locks included

Application Summary:

Year Make/Model
1994-1995 BMW M3
Attributes
Add-On 09513405, 09513405, G82672250180C, 015128-12
Bore Diameter 86.50, 86.50
California Proposition 65 WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Category Hierarchy Pistons, Pistons
Compression Height 1.270, 1.270
Compression Ratio 9.40, 9.40
Country of Origin (Primary) US
Cylinder Quantity 6, 6
EBAY Category ID 33623, 33623
Emission Code Off Road
Engine S50B32 3.2L, S50
Engine - Web S50B32 3.2L, S50
Engine Type ICE, ICE
Forging Type Full Round, Full Round
Harmonized Tariff Code (Schedule B) 8409919990
Hazardous Material Code N
Industry Automotive, Automotive
Life Cycle Status Code Available to Order
Make BMW, BMW
Make - Web BMW
Oil Rail Support Included No, No
Oil Ring Thickness 2.80, 2.80
Piston Line Series Street/Strip Series, Street/Strip Series
Piston Quantity 6, 6
Piston Series S50, S50
Piston Volume -22.50, -22.50
Product Market Sport Compact, Sport Compact
Product Type Engine Piston Kit, Engine Piston Kit
Ring Set Included Yes, Yes
Ring Set Part Number 09513405, 09513405
Ring Set Thickness 1.00 MM x 1.20 MM x 2.80 MM, 1.00 MM x 1.20 MM x 2.80 MM
Rod Length 5.472, 5.472
SDR Required Flag N
Second Compression Ring Thickness 1.20, 1.20
Stroke 91.00, 91.00
Title - Web Diamond Pistons BMW S50B32 3.2L Piston Kit, Diamond Pistons BMW S50B32 3.2L Piston Kit
Top Compression Ring Thickness 1.00, 1.00
VP Exhaust Depth 0.225, 0.225
VP Intake Depth 0.225, 0.225
Warranty Time 30
Wrist Pin Dimensions 0.8267 x 2.250, 0.8267 x 2.250
Wrist Pin Included Yes, Yes
Wrist Pin Length 2.250, 2.250
Wrist Pin Outside Diameter 0.8267, 0.8267
Wrist Pin Part Number G82672250180C, G82672250180C
Wrist Pin Retainer Included Yes, Yes
Wrist Pin Retainer Part Number 015128-12, 015128-12
GTIN 00193564517463