Availability
Harmonic Balancer Bolts
What’s the big deal about harmonic balancer bolts? As the revs of your high-performance engine rise, your crankshaft starts to flex. The harmonic balancer press fit...
What’s the big deal about harmonic balancer bolts? As the revs of your high-performance engine rise, your crankshaft starts to flex. The harmonic balancer press fit to the end absorbs those vibrations, protecting your main bearings and crankshaft bearings while keeping your engine running smoothly. On most engines, a single bolt locks the harmonic balancer in place, so you better make sure it’s a good one—get it from Summit Racing Equipment!
Many stock harmonic balancer bolts are torque-to-yield (TTY) bolts, which means they shouldn’t be reused. So, whether you’re replacing a stock balancer, or upgrading...
What’s the big deal about harmonic balancer bolts? As the revs of your high-performance engine rise, your crankshaft starts to flex. The harmonic balancer press fit to the end absorbs those vibrations, protecting your main bearings and crankshaft bearings while keeping your engine running smoothly. On most engines, a single bolt locks the harmonic balancer in place, so you better make sure it’s a good one—get it from Summit Racing Equipment!
Many stock harmonic balancer bolts are torque-to-yield (TTY) bolts, which means they shouldn’t be reused. So, whether you’re replacing a stock balancer, or upgrading to a durable race-ready model, you should get new hardware for it as well. Most of the bolts we carry are reusable, so your next service or upgrade projects will be even easier!
Summit’s powerful search tools make it simple to find the right harmonic balancer bolt for your application. You can search by Make/Engine to find a stock replacement, or by dimensions, thread count, or tensile strength rating for your aftermarket crank.
Top Brands
With so much of your engine project depending on it, your harmonic balancer bolt should be second to none. That’s why Summit only partners with trusted hardware manufacturers like ARP, ATI Performance Products, Stage 8 Locking Fasteners, Dorman, Milodon, Mr. Gasket, Earl’s Performance, Moroso, and more.
Showing In Stock Items. Show All 211 Items.
Harmonic Balancer Bolt, 27mm 12-Point Head, 4.325 in. UHL, Chromoly, Black Oxide, LS Gen. III/IV, Chevrolet, 4.8L, 5.3L, 5.7L, 6.0L, 6.2L, Each
Part Number: ARP-234-2503
Estimated Ship Date: Monday 2/9/2026
Estimated Ship Date: Monday 2/9/2026
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Harmonic Balancer Bolt, Steel, Gold Iridite, External Hex, Chevy, Small Block, Each
Part Number: SUM-G1677
Estimated Ship Date: Monday 2/9/2026
Estimated Ship Date: Monday 2/9/2026
Harmonic Balancer Bolt, Chromoly, Black Oxide, 12-Point, Chevy, Small Block, Each
Part Number: ARP-134-2501
Estimated Ship Date: Monday 2/9/2026
Estimated Ship Date: Monday 2/9/2026
Harmonic Balancer Bolt, Steel, Flanged Hex, Coarse Thread, Natural, Buick, Cadillac, Chevrolet, GMC, Hummer, Isuzu, Pontiac, Saab, Each
Part Number: ADO-12557840
Estimated Ship Date: Monday 2/9/2026
Estimated Ship Date: Monday 2/9/2026
Harmonic Balancer Bolt, Chromoly, Black Oxide, 12-Point, Ford, V8, Except 351C, Each
Part Number: ARP-150-2501
Estimated Ship Date: Monday 2/9/2026
Estimated Ship Date: Monday 2/9/2026
Harmonic Balancer Bolt, Chromoly, Black Oxide, 12-Point, All Gen. 3/4 Chevy, 4.8, 5.3, 6.0L, 6.2L, 7.0L LS1, LS6, Each
Part Number: SUM-910257
Estimated Ship Date: Monday 2/9/2026
Estimated Ship Date: Monday 2/9/2026
Harmonic Balancer Bolt, Chromoly, Black Oxide, 12-Point, Chevy, Big Block, Each
Part Number: ARP-135-2501
Estimated Ship Date: Monday 2/9/2026
Estimated Ship Date: Monday 2/9/2026
Harmonic Balancer Bolts, GM Genuine Parts, M16 x 2.0 Thread Size, Flanged Hex Head, Steel, 4.055 in. Underhead Length, Cadillac, Chevrolet, GMC, Each
Part Number: ADO-11547372
Not Yet Reviewed
Estimated Ship Date: Monday 2/9/2026
Estimated Ship Date: Monday 2/9/2026
Harmonic Balancer Bolt, Chromoly, Black Oxide, 12-Point, Chevy, Big Block, Each
Part Number: ARP-235-2501
Estimated Ship Date: Monday 2/9/2026
Estimated Ship Date: Monday 2/9/2026
Bolt, Harmonic Balancer, 12-Point, 2.20 in. Length, Mopar, Big Block, V10, Each
Part Number: ARP-2402501
Estimated Ship Date: Monday 2/9/2026
Estimated Ship Date: Monday 2/9/2026
Harmonic Balancer Bolt, Steel, Gold Iridited, External Hex, Chevy, Big Block, Each
Part Number: SUM-G1678
Estimated Ship Date: Monday 2/9/2026
Estimated Ship Date: Monday 2/9/2026
Harmonic Balancer Bolt, Chromoly, Black Oxide, Square Drive, Ford, V8, Each
Part Number: ARP-150-2503
Estimated Ship Date: Monday 2/9/2026
Estimated Ship Date: Monday 2/9/2026
Harmonic Balancer Bolt, Chromoly, Black Oxide, 12-Point, Ford, V8, Except 351C, Each
Part Number: SUM-910259
Estimated Ship Date: Monday 2/9/2026
Estimated Ship Date: Monday 2/9/2026
Balancer Bolt, Chromoly, Black Oxide, 12-Point, Chrysler, Dodge, 5.7, 6.1, 6.4L, Each
Part Number: ARP-147-2501
Estimated Ship Date: Monday 2/9/2026
Estimated Ship Date: Monday 2/9/2026
Harmonic Balancer Bolt, Chromoly, Black Oxide, 12-Point, Ford, 5.0L, Modular V8, Coyote Engine, Each
Part Number: ARP-156-2502
Estimated Ship Date: Monday 2/9/2026
Estimated Ship Date: Monday 2/9/2026
Harmonic Balancer Bolt, Chromoly, Black Oxide, 12-Point, Ford, 4.6L, 5.4L, V8, Each
Part Number: ARP-156-2501
Estimated Ship Date: Monday 2/9/2026
Estimated Ship Date: Monday 2/9/2026
Harmonic Balancer Bolt, Chromoly, Black Oxide, 12-Point, Chevy, Small Block, Each
Part Number: SUM-910258
Estimated Ship Date: Monday 2/9/2026
Estimated Ship Date: Monday 2/9/2026
Harmonic Balancer Bolts, Harmonic Balancer Bolt Kits, External Hex Head, 3/4 in.-16 Thread, Steel, Black Oxide, Chrysler, Dodge, Plymouth, V8, Each
Part Number: SUM-910310
Estimated Ship Date: Monday 2/9/2026
Estimated Ship Date: Monday 2/9/2026
Harmonic Balancer Bolt, Hex Head, Steel, Black, Chevy, LS7, Each
Part Number: NAL-11570163
Estimated Ship Date: Monday 2/9/2026
Estimated Ship Date: Monday 2/9/2026
Harmonic Balancer Bolt,Ford, 289-460 (except 351C), 12-point, 5/8 in. Wrenching, 180,000 psi, 5/8 in. x 18 x 2.050 in. UHL, Incl Washer
Part Number: PQX-1042289
Not Yet Reviewed
Estimated Ship Date: Monday 2/9/2026
Estimated Ship Date: Monday 2/9/2026
Harmonic Balancer Bolt, Hex, 5/8-18 in. RH Thread, Chromoly, Black Oxide, Washer, Ford, Each
Part Number: ATI-950234
Estimated Ship Date: Monday 2/9/2026
Estimated Ship Date: Monday 2/9/2026
Harmonic Balancer Bolt, Gen. 3 and 4 LS engines only. Hex Head, Chevy, 4.8, 5.3, 5.7, 6.0, 6.2L Each
Part Number: SUM-910262
Not Yet Reviewed
Estimated Ship Date: Monday 2/9/2026
Estimated Ship Date: Monday 2/9/2026
Installation Kit, Harmonic Balancer, 8740 Chromoly, Black Oxide, Duramax, Kit
Part Number: FLU-300010
Estimated Ship Date: Monday 2/9/2026
Estimated Ship Date: Monday 2/9/2026
Harmonic Balancer Bolt, Hex Head, Steel, Black Oxide, 1/2-20 in. Thread, Washer, Chevy, Big Block, Each
Part Number: ATI-951502
Estimated Ship Date: Monday 2/9/2026
Estimated Ship Date: Monday 2/9/2026
Damper Crank Bolts All Except Chrysler & Ford OEM Front
Part Number: ATI-950200
Estimated Ship Date: Monday 2/9/2026
Estimated Ship Date: Monday 2/9/2026
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