1978 GMC P25 Engine Harmonic Balancers
Save up to 40% on original replacement 1978 GMC P25 Engine Harmonic Balancers. Navigate our online catalogue to find Engine Harmonic Balancers and other parts designed specifically to fit a 1978 GMC P25.






Engine Harmonic Balancer
$139.92
In Stock
Ships: Monday Sep. 22nd
Pick-Up: Ready in 1 Hour Monday Sep. 22nd
Pick-Up: Ready in 1 Hour Monday Sep. 22nd
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 5.7L 350ci V8 (4.00x3.48; 101.6x88.5);
Engine Base: 5.7L 350ci V8 (4.00x3.48; 101.6x88.5);







Engine Harmonic Balancer
$131.20
$113.43
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 4.8L 292ci L6 (3.88x4.13; 98.4x104.8);
Engine Base: 4.8L 292ci L6 (3.88x4.13; 98.4x104.8);
Vehicle Fitment Notes:
Triple Groove Pulley
Triple Groove Pulley







Engine Harmonic Balancer
$101.29
$87.59
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 5.7L 350ci V8 (4.00x3.48; 101.6x88.5);
Engine Base: 5.7L 350ci V8 (4.00x3.48; 101.6x88.5);





Engine Harmonic Balancer
$165.46
$284.53
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 4.8L 292ci L6 (3.88x4.13; 98.4x104.8);
Engine Base: 4.8L 292ci L6 (3.88x4.13; 98.4x104.8);
Vehicle Fitment Notes:
Dual Groove Pulley
Dual Groove Pulley




Engine Harmonic Balancer
$150.69
$139.07
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 5.7L 350ci V8 (4.00x3.48; 101.6x88.5);
Engine Base: 5.7L 350ci V8 (4.00x3.48; 101.6x88.5);
Vehicle Fitment Notes:
Part Type: Solid Outer Diameter: 7.99 in ATP Number: 102036 ATP Availability: Available to Order Pioneer Number: DA-3504 Pioneer Availability: Available to Order
Part Type: Solid Outer Diameter: 7.99 in ATP Number: 102036 ATP Availability: Available to Order Pioneer Number: DA-3504 Pioneer Availability: Available to Order




Engine Harmonic Balancer
$218.88
$194.00
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Aspiration: Naturally Aspirated; Cylinder Head: OHV; Drive Type: RWD; Engine Base: 4.8L 292ci L6 (3.88x4.13; 98.4x104.8); Engine VIN: T; Fuel Type: GAS; Sub-Model: Base;
Aspiration: Naturally Aspirated; Cylinder Head: OHV; Drive Type: RWD; Engine Base: 4.8L 292ci L6 (3.88x4.13; 98.4x104.8); Engine VIN: T; Fuel Type: GAS; Sub-Model: Base;
Vehicle Fitment Notes:
Double V-Belt; Groove Qty. 2 Outer Diameter: 6.744 in ATP Number: 102070 ATP Availability: Available to Order Pioneer Number: DA-292 Pioneer Availability: Available to Order
Double V-Belt; Groove Qty. 2 Outer Diameter: 6.744 in ATP Number: 102070 ATP Availability: Available to Order Pioneer Number: DA-292 Pioneer Availability: Available to Order




Engine Harmonic Balancer
$218.88
$194.00
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Aspiration: Naturally Aspirated; Cylinder Head: OHV; Drive Type: RWD; Engine Base: 4.8L 292ci L6 (3.88x4.13; 98.4x104.8); Engine VIN: T; Fuel Type: GAS; Sub-Model: Value Van;
Aspiration: Naturally Aspirated; Cylinder Head: OHV; Drive Type: RWD; Engine Base: 4.8L 292ci L6 (3.88x4.13; 98.4x104.8); Engine VIN: T; Fuel Type: GAS; Sub-Model: Value Van;
Vehicle Fitment Notes:
Double V-Belt; Groove Qty. 2 Outer Diameter: 6.744 in ATP Number: 102070 ATP Availability: Available to Order Pioneer Number: DA-292 Pioneer Availability: Available to Order
Double V-Belt; Groove Qty. 2 Outer Diameter: 6.744 in ATP Number: 102070 ATP Availability: Available to Order Pioneer Number: DA-292 Pioneer Availability: Available to Order





Engine Harmonic Balancer
$776.58
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 5.7L 350ci V8 (4.00x3.48; 101.6x88.5);
Engine Base: 5.7L 350ci V8 (4.00x3.48; 101.6x88.5);
Vehicle Fitment Notes:
Part Type: Solid Outer Diameter: 7.96 in Position Related Information: TDC Mark Is Located 13 Degrees From Key-Way ATP Number: 102311 ATP Availability: Available to Order Pioneer Number: 872023 Pioneer Availability: Available to Order ATP: LifeCycle Change Log: Went from 9 (Obsolete) to 2 (Available to Order) Pioneer: Discontinuation / supersession date: 2023-12-19 Pioneer: Obsolete On: 2025-12-19 Pioneer: LifeCycle Change Log: Went from 2 (Available to Order) to 8 (Discontinued)
Part Type: Solid Outer Diameter: 7.96 in Position Related Information: TDC Mark Is Located 13 Degrees From Key-Way ATP Number: 102311 ATP Availability: Available to Order Pioneer Number: 872023 Pioneer Availability: Available to Order ATP: LifeCycle Change Log: Went from 9 (Obsolete) to 2 (Available to Order) Pioneer: Discontinuation / supersession date: 2023-12-19 Pioneer: Obsolete On: 2025-12-19 Pioneer: LifeCycle Change Log: Went from 2 (Available to Order) to 8 (Discontinued)





Engine Harmonic Balancer
$776.58
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 5.7L 350ci V8 (4.00x3.48; 101.6x88.5);
Engine Base: 5.7L 350ci V8 (4.00x3.48; 101.6x88.5);





Engine Harmonic Balancer
$162.51
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 4.8L 292ci L6 (3.88x4.13; 98.4x104.8);
Engine Base: 4.8L 292ci L6 (3.88x4.13; 98.4x104.8);
Vehicle Fitment Notes:
2 Groove Pulley
2 Groove Pulley




Engine Harmonic Balancer
Call for Pricing
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Aspiration: Naturally Aspirated; Cylinder Head: OHV; Drive Type: RWD; Engine Base: 4.8L 292ci L6 (3.88x4.13; 98.4x104.8); Engine VIN: T; Fuel Type: GAS; Sub-Model: Base;
Aspiration: Naturally Aspirated; Cylinder Head: OHV; Drive Type: RWD; Engine Base: 4.8L 292ci L6 (3.88x4.13; 98.4x104.8); Engine VIN: T; Fuel Type: GAS; Sub-Model: Base;
Vehicle Fitment Notes:
Triple V-Belt; Groove Qty. 3 Outer Diameter: 6.744 in ATP Number: 102593 ATP Availability: Available to Order Pioneer Number: DA-293 Pioneer Availability: Available to Order
Triple V-Belt; Groove Qty. 3 Outer Diameter: 6.744 in ATP Number: 102593 ATP Availability: Available to Order Pioneer Number: DA-293 Pioneer Availability: Available to Order




Engine Harmonic Balancer
Call for Pricing
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Aspiration: Naturally Aspirated; Cylinder Head: OHV; Drive Type: RWD; Engine Base: 4.8L 292ci L6 (3.88x4.13; 98.4x104.8); Engine VIN: T; Fuel Type: GAS; Sub-Model: Base;
Aspiration: Naturally Aspirated; Cylinder Head: OHV; Drive Type: RWD; Engine Base: 4.8L 292ci L6 (3.88x4.13; 98.4x104.8); Engine VIN: T; Fuel Type: GAS; Sub-Model: Base;
Vehicle Fitment Notes:
Triple V-Belt; Groove Qty. 3 Outer Diameter: 6.744 in ATP Number: 102593 ATP Availability: Available to Order Pioneer Number: DA-293 Pioneer Availability: Available to Order Triple V-Belt; Groove Qty 3; Outer Diameter 6.744 in
Triple V-Belt; Groove Qty. 3 Outer Diameter: 6.744 in ATP Number: 102593 ATP Availability: Available to Order Pioneer Number: DA-293 Pioneer Availability: Available to Order Triple V-Belt; Groove Qty 3; Outer Diameter 6.744 in




Engine Harmonic Balancer
Call for Pricing
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Aspiration: Naturally Aspirated; Cylinder Head: OHV; Drive Type: RWD; Engine Base: 4.8L 292ci L6 (3.88x4.13; 98.4x104.8); Engine VIN: T; Fuel Type: GAS; Sub-Model: Value Van;
Aspiration: Naturally Aspirated; Cylinder Head: OHV; Drive Type: RWD; Engine Base: 4.8L 292ci L6 (3.88x4.13; 98.4x104.8); Engine VIN: T; Fuel Type: GAS; Sub-Model: Value Van;
Vehicle Fitment Notes:
Triple V-Belt; Groove Qty. 3 Outer Diameter: 6.744 in ATP Number: 102593 ATP Availability: Available to Order Pioneer Number: DA-293 Pioneer Availability: Available to Order
Triple V-Belt; Groove Qty. 3 Outer Diameter: 6.744 in ATP Number: 102593 ATP Availability: Available to Order Pioneer Number: DA-293 Pioneer Availability: Available to Order




Engine Harmonic Balancer
Call for Pricing
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Aspiration: Naturally Aspirated; Cylinder Head: OHV; Drive Type: RWD; Engine Base: 4.8L 292ci L6 (3.88x4.13; 98.4x104.8); Engine VIN: T; Fuel Type: GAS; Sub-Model: Value Van;
Aspiration: Naturally Aspirated; Cylinder Head: OHV; Drive Type: RWD; Engine Base: 4.8L 292ci L6 (3.88x4.13; 98.4x104.8); Engine VIN: T; Fuel Type: GAS; Sub-Model: Value Van;
Vehicle Fitment Notes:
Triple V-Belt; Groove Qty. 3 Outer Diameter: 6.744 in ATP Number: 102593 ATP Availability: Available to Order Pioneer Number: DA-293 Pioneer Availability: Available to Order Triple V-Belt; Groove Qty 3; Outer Diameter 6.744 in
Triple V-Belt; Groove Qty. 3 Outer Diameter: 6.744 in ATP Number: 102593 ATP Availability: Available to Order Pioneer Number: DA-293 Pioneer Availability: Available to Order Triple V-Belt; Groove Qty 3; Outer Diameter 6.744 in