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ARP Fasteners 235-2501 Big Block Chevy Balancer Bolt with Washer

Material Type:
Sold in Quantity:
Black Oxide
Wrench Type:
12 Point
Under Head Length:
Thread Pitch:
MFG. Part #:
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ARP Fasteners 235-2501 Big Block Chevy Balancer Bolt with Washer

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Q & A

What's in the Box

8740 Chromoly. Bolt feature increased diameter, 12 point head for improved accessibility and easy wrenching.  Hardened parallel ground washer prevents galling while promoting even torque loading. 170,000 PSI.

  • For B/B Chevy, use 13/16" 12 point socket
  • "Underhead" length is 1.550"
  • 1/2-20 Thread Size
  • Washer Included

Customer Reviews

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Product Q&A

1 questions : 1 answers

1 answers

is this bolt 1/2"x20 2 1/4"long for bb chevy

d martin
li new york
June 26, 2011

is this bolt 1/2"x20 2 1/4"long for bb chevy


June 27, 2011
This is for big block chevy and is 1/2-20 by 1.55" under head length
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Fits 1955-1986 265-400 c.i. Small Block Chevy (1987 & newer EFI engines may require additional fasteners). 

Note: Some bolts may be too short if using aluminum oil pan or valve covers.

 101-5349501 Data (PDF)