Auto Parts Search
Chevrolet / Chevy Truck Engine >> REVISED HARMONIC BALANCER
Revised Harmonic Balancer On
GM 6.0 & 7.0L (366 & 427 CID) Truck Engines
The AERA Technical Committee has recently learned of a revised harmonic balancer for GM 6.0 & 7.0L truck engines. The new balancer incorporates a bonding agent on both sides of the rubber elastomer isolator. With that procedure the possibility of the inertia ring spinning or walking is greatly reduced.
The new balancer is also identified from previously made units by a B stamped at the end of the Date Build Code. This code appears on the face of the inertia ring (see chart below).
All previously built GM 6.0 & 7.0L engines may be updated with this new design balancer. Use Part #10106421 for 6.0L engines and Part #10106422 for 7.0L engines. General Motors began installing the revised balancer in late 1987 on the 6.0L engines (build code T1221) and early 1988 on 7.0L engines (build code T0301).
HARMONIC BALANCER DATE BUILD CODE
A 8 S B
(Month Built) (Year Built) (Company Vendor) Bonded
A = January
The AERA Technical Committee
Looking for replacement Chevrolet / Chevy Truck engines? Visit our online Rebuilt Engines Store. Need to fix your Chevrolet / Chevy Truck engine? Access here the comprehensive online repair guide for your Chevrolet / Chevy Truck engine. Click Here to find a used Chevrolet / Chevy Truck engine.
Shop online for auto body parts, engines, wheels, lights...
|2004 Buick Regal Grille Assembly, With emblem provision and billet grille insert; A high quality, direct fit OE replacement complete grille and shell assembly; Backed by 1-year, unlimited-mileage warranty..||$52.80|
|1997 Chrysler Town & Country Alternator, Clockwise Rotation, S6 Pulley, Uses Only New Components, Meets Or Exceeds All OEM Specifications, With NSA's Limited 2-Year Warranty.||$118.69|
|2008 Mercury Grand Marquis 16" x 7" Alloy Wheel, Alloy Wheel; 16 X 7; 54MM Offset; 16 Spokes; 5 Lug; 4.5 Inch BP; Machined With Silver, , .||$117.50|
|1960 Chevrolet Truck V8, 4.6 L, 283 CID Rebuilt Engine, Fits most applications, except fuel injection., Warranty: 3-Year/100,000 Mile, .||$1,325.00|
|2003 Saab 9-3 Used Rear Vent Window, Passenger Side, (Sdn, 4 Dr), R., Very Good.||$138.00|
|1991 Plymouth Acclaim Used Parking Lamp, Driver Side, Parklamp/Turn Signal; fender-mtd, amber only, Very Good.||$45.00|
Help me find
Search DIY repair manuals by VIN...
Need To Fix Your Car or Truck?
Try Our Repair Service Finder
Help me find