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Mahle LS7181125F03

Mahle GM LS PowerPak Piston & Ring Kits

Mahle LS7181125F03
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Part Number: 644-LS7181125F03

LS7 Chevy PowerPak Piston & Ring Kit
  • Forged 4032 High Silicon Low Expansion Aluminum Alloy
  • Bore: 4.125"
  • Pin Diameter: 0.927"
  • -3cc Dome Volume
  • Compression Ratio @64cc: 12.2:1
  • $722.89

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    Mahle LS7181125F03 Mahle GM LS PowerPak Piston & Ring Kits $722.89

    Mahle LS7181125F03 Details

    LS7 Chevy

  • Flat Top Pistons
  • .043", 1.5 Napier, 3.0mm Rings
  • Technical Specs:
  • Cubic Inches: 427
  • Bore: 4.125"
  • Stroke: 4.000"
  • Rod Length: 6.067"
  • Compression Height: 1.181R
  • Pin Diameter: 0.927"
  • Crown Volume: -3cc
  • Weight: 454
  • Compression Ratio @ 66cc: 12:1
  • Compression Ratio @ 64cc: 12.2:1
  • Compression Ratio @ 72cc: 11.2:1

  • The Mahle PowerPak is a complete, race proven piston assembly kit composed of hand deburred, forged, performance coated pistons, high quality steel pins, round wire locks and low drag performance rings.

    Performance coatings include a phosphate dry lubricant that is used to protect against ring micro-welding and pin galling during initial startup and break-in. For additional performance, Mahle applies its proprietary Grafal anti-friction coating to each piston skirt.

  • Forged Aluminum Pistons
  • CNC machined crown
  • Hand deburred finishing
  • Forced pin oiling with machined drain backs
  • Lightweight slipper skirt forgings
  • CNC finished pin bores
  • Forced Pin Oiling
  • Race Proven, reliable round wire locks, standard with every kit
  • Pre-fitted German steel pins noted for their high strength, light weight and durability
  • Phosphate coating - provides the grey appearance to the Mahle piston. This dry lubricant coating (not to be confused with a thermal film coating) provides a lubricant film in the pin bores and ring grooves until the oil system of the engine reached operating pressure; particularly useful during the initial start-up or break-in of engines to protect against galling and micro welding. Piston crown remains machine able.
  • Mahle's Grafal Skirt Coating - Reduces drag, scuffing, friction and cylinder bore wear; reduces piston noise.
  • Precision ring grooves for included piston rings

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