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ARP

Bolt, Harmonic Balancer, ARP, Olds V8, 12 Point - 3/4"-16 Thread Size

Part# : CT20077
Mfg#: 180-2501
Sold As: Each
Ship Size: Standard
$28.99
List Price: $32.95
You Save 12%
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Estimated the week of 12/1/2026
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Oldsmobile V8 Harmonic Balancer Bolt (3/4-16, 12-Point) by ARP®

190,000-psi damper bolt uses a wide washer and tall 12-point head for strong crankshaft clamping.

Sized for Oldsmobile V8, 12 Point - 3/4"-16 Thread Size, this ARP® harmonic-balancer bolt is rated at 190,000 psi to provide high clamping force at the crankshaft damper. A 1/4-inch-thick wide-area washer and extra-tall 12-point head provide secure seating and positive socket engagement.

• Product: Harmonic Balancer Bolt • Engine application: Oldsmobile V8, 12 Point - 3/4"-16 Thread Size • Tensile strength: 190,000 psi • Head: Extra-tall 12-point • Washer: 1/4-inch-thick wide-area washer • Selling unit: Each

Notes

  • This item is not eligible for any further discounts or promotional pricing.
We aim to provide accurate and complete product information. If you notice anything incorrect, missing, or unclear, please let us know.
WARNING: This product can expose you to chemicals including lead, sulfur, nickel, chromium, vanadium, titanium, polyvinyl chloride, and 4,4’-methylenebis (2-chloroaniline), which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Vehicle Fitment

Year Make Model Application Details
1961–1977 Oldsmobile Cutlass 12-point head
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Bolt, Harmonic Balancer, ARP, Olds V8, 12 Point - 3/4
ARP Bolt, Harmonic Balancer, ARP, Olds V8, 12 Point - 3/4"-16 Thread Size