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






Engine Harmonic Balancer
$719.34
Limited 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: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);
Engine Base: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);
Vehicle Fitment Notes:
3 Bolts; W/ Counterweight & Raised Pulley Part Type: Solid Outer Diameter: 6.50 in ATP Number: 102029 ATP Availability: Discontinued Pioneer Number: 872008 Pioneer Availability: Available to Order ATP: Discontinuation / supersession date: 11/24/20 ATP: Obsolete On: 11/24/22 ATP: LifeCycle Change Log: Available to Order -> Discontinued ATP: LifeCycle Ticket Log: JNP-18368
3 Bolts; W/ Counterweight & Raised Pulley Part Type: Solid Outer Diameter: 6.50 in ATP Number: 102029 ATP Availability: Discontinued Pioneer Number: 872008 Pioneer Availability: Available to Order ATP: Discontinuation / supersession date: 11/24/20 ATP: Obsolete On: 11/24/22 ATP: LifeCycle Change Log: Available to Order -> Discontinued ATP: LifeCycle Ticket Log: JNP-18368





Engine Harmonic Balancer
$719.34
Limited 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: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);
Engine Base: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);
Vehicle Fitment Notes:
3 Bolts; W/ Counterweight & Raised Pulley Part Type: Solid Outer Diameter: 6.50 in ATP Number: 102029 ATP Availability: Discontinued Pioneer Number: 872008 Pioneer Availability: Available to Order ATP: Discontinuation / supersession date: 2020-11-24 ATP: Obsolete On: 2022-11-24 ATP: LifeCycle Change Log: Available to Order -> Discontinued ATP: LifeCycle Ticket Log: JNP-18368
3 Bolts; W/ Counterweight & Raised Pulley Part Type: Solid Outer Diameter: 6.50 in ATP Number: 102029 ATP Availability: Discontinued Pioneer Number: 872008 Pioneer Availability: Available to Order ATP: Discontinuation / supersession date: 2020-11-24 ATP: Obsolete On: 2022-11-24 ATP: LifeCycle Change Log: Available to Order -> Discontinued ATP: LifeCycle Ticket Log: JNP-18368





Engine Harmonic Balancer
$238.45
Limited 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: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);
Engine Base: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);
Vehicle Fitment Notes:
Direct Replacement
Direct Replacement





Engine Harmonic Balancer
$155.59
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: 5.8L 5753cc 351ci V8 (4.00x3.50; 101.6x88.9); Engine Version: Windsor;
Engine Base: 5.8L 5753cc 351ci V8 (4.00x3.50; 101.6x88.9); Engine Version: Windsor;
Vehicle Fitment Notes:
Direct Replacement
Direct Replacement







Engine Harmonic Balancer
$114.00
$186.74
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 5.8L 5753cc 351ci V8 (4.00x3.50; 101.6x88.9); Engine Version: Windsor; Sub-Model: XR-7;
Engine Base: 5.8L 5753cc 351ci V8 (4.00x3.50; 101.6x88.9); Engine Version: Windsor; Sub-Model: XR-7;





Engine Harmonic Balancer
$482.07
$416.79
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 5.8L 5753cc 351ci V8 (4.00x3.50; 101.6x88.9); Engine Version: Windsor; Sub-Model: XR-7;
Engine Base: 5.8L 5753cc 351ci V8 (4.00x3.50; 101.6x88.9); Engine Version: Windsor; Sub-Model: XR-7;







Engine Harmonic Balancer
$323.51
$279.71
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 5.8L 5753cc 351ci V8 (4.00x3.50; 101.6x88.9); Engine Version: Windsor; Sub-Model: XR-7;
Engine Base: 5.8L 5753cc 351ci V8 (4.00x3.50; 101.6x88.9); Engine Version: Windsor; Sub-Model: XR-7;







Engine Harmonic Balancer
$173.25
$149.80
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);
Engine Base: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);







Engine Harmonic Balancer
$427.02
$369.21
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);
Engine Base: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);




Engine Harmonic Balancer
$601.47
$821.20
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);
Engine Base: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);
Vehicle Fitment Notes:
ATP Number: 102009 ATP Availability: Available to Order Pioneer Number: 872071 Pioneer Availability: Available to Order
ATP Number: 102009 ATP Availability: Available to Order Pioneer Number: 872071 Pioneer Availability: Available to Order

Engine Harmonic Balancer
$173.31
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);
Engine Base: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);
Vehicle Fitment Notes:
4 Bolt Hub; W/ 28 oz Weight Part Type: Solid Outer Diameter: 6.51 in ATP Number: 102010 ATP Availability: Discontinued Pioneer Number: DA-3022 Pioneer Availability: Available to Order ATP: Discontinuation / supersession date: 11/24/20 ATP: Obsolete On: 11/24/22 ATP: LifeCycle Change Log: Available to Order -> Discontinued ATP: LifeCycle Ticket Log: JNP-18368
4 Bolt Hub; W/ 28 oz Weight Part Type: Solid Outer Diameter: 6.51 in ATP Number: 102010 ATP Availability: Discontinued Pioneer Number: DA-3022 Pioneer Availability: Available to Order ATP: Discontinuation / supersession date: 11/24/20 ATP: Obsolete On: 11/24/22 ATP: LifeCycle Change Log: Available to Order -> Discontinued ATP: LifeCycle Ticket Log: JNP-18368

Engine Harmonic Balancer
$173.31
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);
Engine Base: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);
Vehicle Fitment Notes:
4 Bolt Hub; W/ 28 oz Weight Part Type: Solid Outer Diameter: 6.51 in ATP Number: 102010 ATP Availability: Discontinued Pioneer Number: DA-3022 Pioneer Availability: Available to Order ATP: Discontinuation / supersession date: 2020-11-24 ATP: Obsolete On: 2022-11-24 ATP: LifeCycle Change Log: Available to Order -> Discontinued ATP: LifeCycle Ticket Log: JNP-18368
4 Bolt Hub; W/ 28 oz Weight Part Type: Solid Outer Diameter: 6.51 in ATP Number: 102010 ATP Availability: Discontinued Pioneer Number: DA-3022 Pioneer Availability: Available to Order ATP: Discontinuation / supersession date: 2020-11-24 ATP: Obsolete On: 2022-11-24 ATP: LifeCycle Change Log: Available to Order -> Discontinued ATP: LifeCycle Ticket Log: JNP-18368





Engine Harmonic Balancer
$256.77
$152.61
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 5.8L 5753cc 351ci V8 (4.00x3.50; 101.6x88.9); Engine Version: Modified; Transmission Control Type: Automatic;
Engine Base: 5.8L 5753cc 351ci V8 (4.00x3.50; 101.6x88.9); Engine Version: Modified; Transmission Control Type: Automatic;
Vehicle Fitment Notes:
ATP Number: 102100 ATP Availability: Available to Order Pioneer Number: N/A Pioneer Availability: N/A
ATP Number: 102100 ATP Availability: Available to Order Pioneer Number: N/A Pioneer Availability: N/A





Engine Harmonic Balancer
$256.77
$152.61
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 6.6L 400ci V8 (4.00x4.00; 101.6x101.6);
Engine Base: 6.6L 400ci V8 (4.00x4.00; 101.6x101.6);
Vehicle Fitment Notes:
ATP Number: 102100 ATP Availability: Available to Order Pioneer Number: N/A Pioneer Availability: N/A
ATP Number: 102100 ATP Availability: Available to Order Pioneer Number: N/A Pioneer Availability: N/A

Engine Harmonic Balancer
$424.36
$218.24
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 5.8L 5753cc 351ci V8 (4.00x3.50; 101.6x88.9); Engine Version: Windsor;
Engine Base: 5.8L 5753cc 351ci V8 (4.00x3.50; 101.6x88.9); Engine Version: Windsor;
Vehicle Fitment Notes:
ATP Number: 102204 ATP Availability: Available to Order Pioneer Number: DA-2009 Pioneer Availability: Available to Order
ATP Number: 102204 ATP Availability: Available to Order Pioneer Number: DA-2009 Pioneer Availability: Available to Order





Engine Harmonic Balancer
$746.99
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 5.8L 5753cc 351ci V8 (4.00x3.50; 101.6x88.9);
Engine Base: 5.8L 5753cc 351ci V8 (4.00x3.50; 101.6x88.9);
Vehicle Fitment Notes:
4 Bolt Hub; W/ 28 oz Weight Part Type: Solid Outer Diameter: 6.36 in ATP Number: 102240 ATP Availability: Discontinued Pioneer Number: 872007 Pioneer Availability: Available to Order ATP: Discontinuation / supersession date: 11/24/20 ATP: Obsolete On: 11/24/22 ATP: LifeCycle Change Log: Available to Order -> Discontinued ATP: LifeCycle Ticket Log: JNP-18368
4 Bolt Hub; W/ 28 oz Weight Part Type: Solid Outer Diameter: 6.36 in ATP Number: 102240 ATP Availability: Discontinued Pioneer Number: 872007 Pioneer Availability: Available to Order ATP: Discontinuation / supersession date: 11/24/20 ATP: Obsolete On: 11/24/22 ATP: LifeCycle Change Log: Available to Order -> Discontinued ATP: LifeCycle Ticket Log: JNP-18368





Engine Harmonic Balancer
$746.99
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 5.8L 5753cc 351ci V8 (4.00x3.50; 101.6x88.9);
Engine Base: 5.8L 5753cc 351ci V8 (4.00x3.50; 101.6x88.9);
Vehicle Fitment Notes:
4 Bolt Hub; W/ 28 oz Weight Part Type: Solid Outer Diameter: 6.36 in ATP Number: 102240 ATP Availability: Discontinued Pioneer Number: 872007 Pioneer Availability: Available to Order ATP: Discontinuation / supersession date: 2020-11-24 ATP: Obsolete On: 2022-11-24 ATP: LifeCycle Change Log: Available to Order -> Discontinued ATP: LifeCycle Ticket Log: JNP-18368
4 Bolt Hub; W/ 28 oz Weight Part Type: Solid Outer Diameter: 6.36 in ATP Number: 102240 ATP Availability: Discontinued Pioneer Number: 872007 Pioneer Availability: Available to Order ATP: Discontinuation / supersession date: 2020-11-24 ATP: Obsolete On: 2022-11-24 ATP: LifeCycle Change Log: Available to Order -> Discontinued ATP: LifeCycle Ticket Log: JNP-18368





Engine Harmonic Balancer
$340.40
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Made in USA
Vehicle fitment:
Engine Base: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);
Engine Base: 5.0L 302ci V8 (4.00x3.00; 101.6x76.2);
Vehicle Fitment Notes:
Street Version
Street Version





Engine Harmonic Balancer
$214.69
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 5.8L 5753cc 351ci V8 (4.00x3.50; 101.6x88.9); Engine Version: Modified;
Engine Base: 5.8L 5753cc 351ci V8 (4.00x3.50; 101.6x88.9); Engine Version: Modified;





Engine Harmonic Balancer
$423.84
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Made in USA
Vehicle fitment:
Engine Base: 5.8L 5753cc 351ci V8 (4.00x3.50; 101.6x88.9); Engine Version: Windsor;
Engine Base: 5.8L 5753cc 351ci V8 (4.00x3.50; 101.6x88.9); Engine Version: Windsor;
Vehicle Fitment Notes:
Racing Version
Racing Version





Engine Harmonic Balancer
$257.87
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Made in USA
Vehicle fitment:
Engine Base: 5.8L 5753cc 351ci V8 (4.00x3.50; 101.6x88.9); Engine Version: Windsor;
Engine Base: 5.8L 5753cc 351ci V8 (4.00x3.50; 101.6x88.9); Engine Version: Windsor;
Vehicle Fitment Notes:
Street Version
Street Version





Engine Harmonic Balancer
$197.44
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 6.6L 400ci V8 (4.00x4.00; 101.6x101.6);
Engine Base: 6.6L 400ci V8 (4.00x4.00; 101.6x101.6);
Vehicle Fitment Notes:
Direct Replacement
Direct Replacement





Engine Harmonic Balancer
$379.27
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Made in USA
Vehicle fitment:
Engine Base: 6.6L 400ci V8 (4.00x4.00; 101.6x101.6);
Engine Base: 6.6L 400ci V8 (4.00x4.00; 101.6x101.6);
Vehicle Fitment Notes:
Racing Version
Racing Version





Engine Harmonic Balancer
$281.36
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Made in USA
Vehicle fitment:
Engine Base: 6.6L 400ci V8 (4.00x4.00; 101.6x101.6);
Engine Base: 6.6L 400ci V8 (4.00x4.00; 101.6x101.6);
Vehicle Fitment Notes:
Street Version
Street Version