Product#: HD100027

Oldsmobile 350/403/455 Harmonic Balancer All Steel Race/External/11.14/6.61/1.54/3.00

Pro/Race harmonic dampers are designed for a wide range of high performance applications. These "all steel" dampers are direct replacements for factory cast iron versions which may fracture or disintegrate at high RPM and are...

Product#: HD100011

400ci Pro/Race All Steel 6.61" x 1.54" External Balance Race Harmonic Balancer

Pro/Race harmonic dampers are designed for a wide range of high performance applications. This "all steel" damper is direct replacements for factory cast iron versions which may fracture or disintegrate at high RPM and are...

Product#: 1620101

262-350 / 409 6-1/4" Internal Balance Fluidampr Harmonic Damper

Fluidampr performance harmonic balancers and dampers contain no rubber or elastomers. Instead, they are filled with a viscous silicone-based liquid that doesn't wear out after time. The liquid absorbs virtually all torsional...

Product#: HD100014

283-350 with Supercharger Pro/Race All Steel 6.61" x 1.54" Internal Balance Race Harmonic Balancer

Pro/Race harmonic dampers are designed for a wide range of high performance applications. This "all steel" damper is direct replacements for factory cast iron versions which may fracture or disintegrate at high RPM and are...

Product#: HD100023

400 Harmonic Pro/Sport High Carbon Steel 6.61" x 1.52" External Balance Harmonic Balancer

Pro/Sport harmonic dampers protect against harmful engine vibrations that can lead to valvetrain damage, rapid bearing and timing chain wear or ultimately crankshaft breakage. Machined to exacting tolerances and assembled...

Product#: N585

1967 Firebird, GTO, LeMans, Tempest; Harmonic Balancer; 2 Piece w/Hardware

Reproduction of the original harmonic balance designed for use with 1967 Pontiac Firebird, GTO, LeMans, and Tempest models with 326, 389, 350, 400, and 421 models. This original style two piece harmonic balancer replaces all...

Product#: HD100016

283-350 Pro/Sport High Carbon Steel 6.10" x 1.52" Internal Balance Harmonic Balancer

Pro/Sport harmonic dampers protect against harmful engine vibrations that can lead to valvetrain damage, rapid bearing and timing chain wear or ultimately crankshaft breakage. Machined to exacting tolerances and assembled...

Product#: A8700170

1964-79 Pontiac V8; Harmonic Balancer Bolt/Washer

This is the correct bolt and washer for 1964-79 Pontiac V8 harmonic balancers. The bolt is the original size and features the correct markings with black zinc finish. Note: Not for Oldsmobile 403 engines.

Product#: TA4024

1977-79 Pontiac Trans Am; Oldsmobile 403; Harmonic Balancer Bolt And Washer

Oldsmobile 403 engine, engine harmonic balancer bolt and washer. Factory correct.

Product#: 154211

1965-1974 Harmonic Balancer Attaching Bolt Set, BB Chevrolet

Correct reproduction harmonic balancer bolt kit, 1/2-20 x 1-1/2", includes 1 bolt & 2 washers. All with big block. GM Full Size passenger car applications: 1965-1974 Camaro applications: 1967-1974 Chevy II/Nova applications:...

Product#: 1720101

262-350 7-1/4" Internal Balance Fluidampr Harmonic Damper

Fluidampr performance harmonic balancers and dampers contain no rubber or elastomers. Instead, they are filled with a viscous silicone-based liquid that doesn't wear out after time. The liquid absorbs virtually all torsional...

Product#: HD100026

Pontiac 350-455 Harmonic Balancer All Steel Race/Internal/9.83/6.61/1.38/3.00

Pro/Race harmonic dampers are designed for a wide range of high performance applications. These "all steel" dampers are direct replacements for factory cast iron versions which may fracture or disintegrate at high RPM and are...

Product#: HD100010

283-350 Pro/Race All Steel 6.61" x 1.54" Internal Balance Race Harmonic Balancer

Pro/Race harmonic dampers are designed for a wide range of high performance applications. This "all steel" damper is direct replacements for factory cast iron versions which may fracture or disintegrate at high RPM and are...

Product#: HD100022

283-350 Pro/Sport High Carbon Steel 6.61" x 1.52" Internal Balance Harmonic Balancer

Pro/Sport harmonic dampers protect against harmful engine vibrations that can lead to valvetrain damage, rapid bearing and timing chain wear or ultimately crankshaft breakage. Machined to exacting tolerances and assembled...

Product#: A8700169

1968-79 Pontiac V8; Harmonic Balancer; Heavy Duty 7.65 Lb

This one piece harmonic balancer is correct for 1968-79 Pontiac V8 engines. Balancers are available in stock and heavy duty versions. Heavy duty balancers were slightly lighter than the stock version and commonly used on RA...

Product#: HD100019

283-350 Pro/Sport High Carbon Steel 6.61" x 1.52" Internal Balance Harmonic Balancer

Pro/Sport harmonic dampers protect against harmful engine vibrations that can lead to valvetrain damage, rapid bearing and timing chain wear or ultimately crankshaft breakage. Machined to exacting tolerances and assembled...

Product#: HD100006

400ci Pro/Street Bonded Nodular Iron 8.00" x 1.47" External Balance Street Harmonic Balancer

This Pro/Street bonded nodular iron damper has special splines to enhance bonding between the elastomer, inner hub, and outer ring preventing any radial movement. PRO/STREET Harmonic Dampers feature: Nodular Iron Constructio...

Product#: HD100001

283-350 Pro Street Bonded Nodular Iron 6.10" x.760 Internal Balance Street Harmonic Balancer

This Pro/Street bonded nodular iron damper features special splines to enhance bonding between the elastomer, inner hub and outer ring preventing any radial movement. PRO/STREET Harmonic Dampers feature: Nodular Iron Constru...

Product#: A8700168

1968-79 Pontiac V8; Harmonic Balancer; Stock 7.90 Lb

This one piece harmonic balancer is correct for 1968-79 Pontiac V8 engines. Balancers are available in stock and heavy duty versions. Heavy duty balancers were slightly lighter than the stock version and commonly used on RA...

Product#: HD100002

283-350 Pro/Street Bonded Nodular Iron 6.75" x 1.32" Internal Balance Street Harmonic Balancer

This Pro/Street bonded nodular iron damper has special splines to enhance bonding between the elastomer, inner hub and outer ring preventing any radial movement. PRO/STREET Harmonic Dampers feature: Nodular Iron Construction...

Product#: HD100005

283-350 Pro/Street Bonded Nodular Iron 8.00" x 1.47" Internal Balance Street Harmonic Balancer

This Pro/Street bonded nodular iron damper has special splines to enhance bonding between the elastomer, inner hub, and outer ring preventing any radial movement. PRO/STREET Harmonic Dampers feature: Nodular Iron Constructio...

Product#: G3888

1998-02 F-Body LS1 Crankshaft Balancer with Pulley

Replace the damaged or missing original crankshaft balancer on your engine with a Delco service part. For vehicles with LSx swaps, you'll need to know what balancer you have to be able to order the right belt system. The...

Product#: 141726-BCHW

Chevy Bowtie Emblem 8" Chrome Harmonic Balancer Cover. Chevy S/B.

These patented harmonic balancer covers offer improved readability, more stable Top Dead Center indication and timing accuracy, enhanced appearance for a previously ignored underhood area, and the elimination of timing tapes...

Product#: 154220

1962-1996 Harmonic Balancer Attaching Bolt Set, SB Chevrolet

Correct reproduction harmonic balancer attaching bolt kit, ?Delta? headmark, 7/16-20 x 2-1/4", includes 1 bolt, and 2 washers. All small blocks w/Sp.Hi-Perf., or crank with threaded end. GM Full Size passenger car...

Product#: A8700171

1964-72 Pontiac V8; Lower Pulley Reinforcement Ring

Reinforcement ring for the lower pulleys on 1964-72 Pontiac V8 models. The ring is made of.099" thick black zinc finished steel just like the originals. This reinforcement ring is designed for balancers and pulleys with four...

Product#: HD10030

Small Block Pro/Sport Counterweight

Pro Race Performance externally balanced harmonic balancers feature weights bolted in place which may be removed for neutral or internally balanced application. Internally balanced balancers can be used on an external...

Product#: HD10029

Small Block Pro/Race Counterweight

Pro Race Performance externally balanced harmonic balancers feature weights bolted in place which may be removed for neutral or internally balanced application. Internally balanced balancers can be used on an external...

Product#: HD10028

Small Block Pro/Street Counterweight

Pro Race Performance externally balanced harmonic balancers feature weights bolted in place which may be removed for neutral or internally balanced application. Internally balanced balancers can be used on an external...

Product#: 66517CC

Chrome Proform 6-3/4" Harmonic Balancer Cover

Add a high performance look to your harmonic balancer by adding this aftermarket cover.

Product#: 66518BKC

Black Small Block 8" Proform Harmonic Balancer Cover

Add a high performance look to your harmonic balancer by adding this aftermarket cover.

Product#: 66517BKC

Black Proform 6-3/4" Harmonic Balancer Cover

Add a high performance look to your harmonic balancer by adding this aftermarket cover.

Product#: G9287

1967-86 Chevrolet Small Block Crankshaft Balancer Washer

This washer is designed for use with the crankshaft balancer bolt.

Product#: G5886

1967-81 Small Block Chevrolet Crank Pulley Bolt

This bolt positively retains the balancer and pulley on the crankshaft snout. 7/16 x 20 x 2 1/4" grade 8 bolt Black oxide finish

Product#: 66518CC

Chrome Small Block 8" Proform Harmonic Balancer Cover

Add a high performance look to your harmonic balancer by adding this aftermarket cover.

Product#: TA4025

1977-79 Pontiac Trans Am; Oldsmobile 403; Harmonic Balancer Keyway

Oldsmobile 403 engine hamonic balancer crank shaft key. Factory correct.

Product#: G9283

Woodruff Key

GM original replacement crankshaft woodruff keys. These are designed for a 1/8" groove depth