$14.95 Flat Rate Postage

ACL 93-98 Toyota 6 4477cc Standard Size Race Series Main Bearing Set / acl7M7989H-STD


or four payments of $115.00 with

The unique combination of design, metallurgy and engineering come together to deliver what drivers expect from high performance Trimetal engine bearings. Designed to withstand higher RPM conditions


  • High strength overlay plate with reduced thickness for improved fatigue properties
  • Hardened steel backs on all rod bearings to improve the support of the bearing lining and assist with bearing retention in the housing.
  • Increased crush for improved bearing retention
  • Elimination of flash plating on the back of the bearings to improve heat transfer through the bearings and to maximize the grip between the bearings and its housing.
  • Increased eccentricity to compensate for bore distortion at high rpm and to assist in the formation of hydrodynamic oil films.
  • 3/4 grooved Main Bearings to optimize bearing load carrying surface area and oil flow to the conrod bearings.
  • Tight consistent wall tolerances to help you maintain consistent clearances.
  • Enlarged ID chamfers on bearing edges where required to accommodate large fillet radius on performance crankshafts.

Bearings comes in multiple sizes::

  • "H" = Standard Size
  • "H-.25" = .25mm Thicker than stock. Use this when your crank is cut .010"
  • "H-.50" = .50mm Thicker than stock. Use this when your crank is cut .020"
  • "H-.025" = .025mm Thicker than stock. Use this when you need .001" less oil clearance.
  • "HX" = .025mm Thinner than stock. Use this when you need .001" more oil clearance.