
PROFORMPART NUMBER: 778-66506
66506 Harmonic Balancer for 1971-1995 Small Block Chrysler 360/5.9L
$12499
Harmonic Dampers
Harmonic Balancer1971-1995 Small Block Chrysler 360/5.9L External Balance Counter Weight Cut On Ring Diameter: 7.250 in. RPM Limit: 6,000 Degree Markings Nodular Iron Natural Finish Sold Individually
Proform 66506 Harmonic Balancer Features:
- Non-SFI Approved
- Thickness: 1.250 in.
- Designed specifically for the Chrysler 5.9L Small Block (LA)/360 engine — stock fitment and proper pulley spacing
- Constructed with durable materials to resist wear and misalignment under heat and load
- OE balance type (external between-weights), matching the original damping design
- Reliable choice for performance and street applications — restores factory front pulley performance
Precision Balancing for Maximum Performance
Proform Harmonic Dampers are engineered to reduce harmful engine vibrations, ensuring smoother operation and extending the life of critical engine components. Manufactured with high-quality materials and precise balancing, these dampers deliver dependable performance for both street and racing applications. Designed as direct-fit replacements, Proform Harmonic Dampers provide durability, accuracy, and the performance confidence enthusiasts expect.
Part TypeHarmonic Balancer
Product LineProform Harmonic Dampers
BrandPROFORM
Package Height3.2
Package Width8.5
Package Length8.5
Weight9.63 PG
Part CategoryPerformance Parts
Degree MarkingsYes
QuantitySold individually
Harmonic Balancer MaterialNodular iron
Part FitmentSemi Universal
Outside Diameter7.25 in
Safety RatingNot SFI Approved
Engine BalanceExternal
Harmonic Balancer FinishNatural
Vendor Part Number66506
Package Qty1
Package TypeEA
No Questions
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Some parts are not legal for use in California or other states with similar laws / regulations

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