OPGI.com works best with JavaScript enabled.
1‑800‑243‑8355

As seen on

  • Detroit Muscle Logo
  • Speed is the New Black Logo

General Motors

Damper, Crankshaft, LS Engine, Wet Sump

Part# : CH33458
Sold As: Each
Ship Size: Standard
Price Match: Eligible
$229.99
List Price: $253.95
You Save $23.96
Checkmark IconIn Stock
available for immediate delivery
Vehicle Specific View fitment for 62 models
Add To Wishlist 

LS3 Crankshaft Harmonic Balancer Genuine GM®

Genuine GM® LS3 balancer uses 10 serpentine grooves and the Chevrolet Performance drive spacing.

Genuine GM® crankshaft balancer #12674582 is specified by General Motors for LS3 engines and works with Chevrolet Performance serpentine accessory-drive systems #19421420 and #19421444. The OE balancer measures 7.64 inches outside diameter with 10 pulley grooves and no keyway. GM does not include the center bolt and washer, so reuse/replace those components as required by the installation procedure.

• Genuine GM® part #12674582 • LS3 engine application • 7.64-inch outside diameter • 10-groove serpentine drive • No crankshaft keyway • Center bolt and washer not included

4
This product does not require an EO in California. By nature of its design, it is legal for sale and use in all 50 states. Replacement parts included. Learn More
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
1982 Buick Grand National  
1984–1987 Buick Grand National  
1976–1987 Buick Regal  
1963–1976 Buick Riviera  
1961–1972 Buick Skylark  
1983–1986 Buick T-Type  
1938–1993 Cadillac 60 Special  
2013–2019 Cadillac ATS  
1965–1976 Cadillac Calais  
2003–2019 Cadillac CTS  
1959–2005 Cadillac DeVille  
1953–2002 Cadillac Eldorado  
1999–2000 Cadillac Escalade  
2002–2023 Cadillac Escalade  
2002–2013 Cadillac Escalade EXT  
1965–1996 Cadillac Fleetwood  
1936–1951 Cadillac Series 60  
1946–1964 Cadillac Series 60 Fleetwood  
1936–1951 Cadillac Series 61  
1937–1976 Cadillac Series 62  
1936–1951 Cadillac Series 63  
1937–1938 Cadillac Series 65  
1936–1942 Cadillac Series 67  
1936–1937 Cadillac Series 70  
1940 Cadillac Series 72  
1936–1942 Cadillac Series 75  
1946–1964 Cadillac Series 75  
1946–1964 Cadillac Series 75 Fleetwood  
1976–2004 Cadillac Seville  
2005–2011 Cadillac STS  
2004–2009 Cadillac XLR  
1947–1955 Chevrolet Advance Design  
1969–1994 Chevrolet Blazer  
1960–1987 Chevrolet C10  
1960–1987 Chevrolet C20  
1960–1987 Chevrolet C30  
1964–1977 Chevrolet Chevelle  
1960–1969 Chevrolet Corvair  
1961–1965 Chevrolet Corvair 95 FC  
1959–1960 Chevrolet El Camino  
1964–1987 Chevrolet El Camino  
1960–1987 Chevrolet K10  
1960–1987 Chevrolet K20  
1977–1987 Chevrolet K30  
1978–1983 Chevrolet Malibu  
1997–2022 Chevrolet Malibu  
1970–1988 Chevrolet Monte Carlo  
1995–2007 Chevrolet Monte Carlo  
1960–1991 Chevrolet Suburban  
1955–1959 Chevrolet Task Force  
1955–1959 GMC Blue Chip  
1960–1987 GMC C15/C1500  
1960–1987 GMC C25/C2500  
1960–1987 GMC C35/C3500  
1978–1987 GMC Caballero  
1970–1991 GMC Jimmy  
1960–1987 GMC K15/K1500  
1960–1987 GMC K25/K2500  
1977–1987 GMC K35/K3500  
1947–1955 GMC New Design  
1971–1977 GMC Sprint  
1960–1991 GMC Suburban  
1961–1988 Oldsmobile Cutlass  
1958–1986 Pontiac Bonneville  
1959–1977 Pontiac Catalina  
1962–1987 Pontiac Grand Prix  
1964–1973 Pontiac GTO  
1961–1981 Pontiac LeMans  
1961–1970 Pontiac Tempest  
  • Headshot of OPGI Employee
    Need help finding the right GM restoration parts? Contact a GM Parts Specialist
    Chat Unknown Status Call Toll-Free
    Mon–Fri 8:00–4:30 PT
    Sat 10:00–3:00 PT
     GM Parts Specialist Offline
  • Price Match Guarantee Great parts. Competitive prices. Guaranteed.
  • GM Restoration Experts Since 1982 Over four decades dedicated to GM restoration
  • Original GM Is Our Standard Original GM parts and factory references guide every reproduction
  • A Deeper GM Selection Thousands of restoration, performance, and replacement parts

Customers Who Viewed This Item Also Viewed

Reviews (0)

UH OH! Product reviews didn't load.
Please reload the page, or unblock our review partner Yotpo.com.
Damper, Crankshaft, LS Engine, Wet Sump
General Motors Damper, Crankshaft, LS Engine, Wet Sump