Edelbrock E-Series Cylinder Head Bolt Kit #85812 for Chevy 348/409 engines

Special Price $112.46 Regular Price $124.95
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Edelbrock #85812 is a Head Bolt Kit for 1958-65 Big-Block Chevrolet 348/409 "W" Engines with Edelbrock 60809. 60815, & 60819 Performer RPM Cylinder Heads. This kit contains a complete set of Head Bolts & Washers for a pair of heads.
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Edelbrock E-Series Cylinder Head Bolt Kit #85812 is a high-quality replacement set of bolts with washers for use with Chevy W-series big-block 348/409 engines equipped with Performer RPM #60815 and #60819 aluminum heads. This kit contains all necessary bolts and washers to replace the factory bolts for a pair of heads. E-Series bolts have a yield tensile strength of 190,000 PSI for strong and reliable loading with generous filleting throughout to eliminate stress risers. Bolt threads are rolled after heat-treating for superior form and strength, while a small hex head provides extra space for socket clearance in tight situations. E-Series Cylinder Head Bolts have a durable black oxide finish with sealer and come with the distinctive Edelbrock “E” stamped into the head.

Features and Benefits

  • For Chevy W-series (348/409) engines with aluminum heads; Yield tensile strength of 190,000 PSI; Heat treating with rolled threads for superior form and strength; black-oxide finish with sealer; Edelbrock “E” logo stamped on bolt head



Manufacturer Edelbrock
Application Application Specific
UPC 00085347858125
Quantity Kit
Thread Type Coarse
Thread Diameter 0.4375 in
Minimum Length 3.45 in
Availability Note Available to Order
Warranty 12 Months
Hazardous Materials Warning WARNING: This product can expose you to Chromium, which is known to the State of California to cause cancer or birth defects or other reproductive harm. For more information, visit
Installation Notes
  • The Edelbrock #8581 is made specifically for Chevy W engines 409; Installation is the same as for original equipment cylinder heads. Consult service manual for specific procedures, if necessary.; Be sure that the surface of the block and the surface of the head are thoroughly cleaned to remove any oily film before installation.; Use alcohol or lacquer thinner on a lint-free rag to clean. Apply Teflon pipe sealant or suitable sealer to head bolt threads.; Apply 30W oil or suitable lubricant under side of bolt heads and washers. Torque to 65 ft./lbs. in three steps (40, 55, 65) following the factory tightening sequence A re-torque is recommended after initial start-up and cool-down (allow 2-3 hours for adequate cooling)
Finish Black Oxide
Head Drive Type Hex
Length (16) 3.45 in, (20) 4.18 in
Material Chromoly