ATP Parts
OE Replacement Balancer

ATP Parts 102028 Engine Harmonic Balancer

Brand ATP Parts 102028
Inside Diameter 1.125
Inside Diameter 28
Outside Diameter 147
Outside Diameter 5.8125
Pulley Groove Quantity 2
Grade Type Standard replacement
Mounting Hole Quantity 2
Drive Belt Type Serpentine
Bolt And Washer Included No
Keyway Type Yes
Depth 3.25
Depth 83
LineCode Atp2
Product line OE Replacement Balancer
Fits Ford, Mazda, and Mercury · 115 vehicles

OE replacement balancer. Fits and functions like the original part for a direct replacement.

Vibration damping design. Absorbs crankshaft vibrations to help restore normal engine operation.

Standard replacement. Built as a three-piece harmonic balancer with a metal pulley surface.

Cross-references Pioneer Automotive Industries DA-244, 309452 and 594111 for the same application. See all 13.

$102.65Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
Step 2 — Quantity
Order total $102.65
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.

OE Replacement Harmonic Balancer for Ford and Mazda

ATP Parts 102028 is an OE Replacement Balancer built to restore crankshaft vibration control and belt alignment on select Ford and Mazda applications. It is a direct-fit engine harmonic balancer for vehicles such as the Ford Ranger, Ford Explorer, and Mazda B4000, with fitment spanning 1990-2010 across confirmed applications.

Key Features

  • OE Replacement Balancer from ATP Parts
  • Engine harmonic balancer for serpentine belt systems
  • Standard replacement grade for direct-fit service
  • 2 pulley grooves
  • Keyway type: yes
  • Inside diameter: 1.125 in. (28 mm)
  • Outside diameter: 5.8125 in. (147 mm)
  • Depth: 3.25 in. (83 mm)
  • Mounting hole quantity: 2

Product Details

The harmonic balancer absorbs crankshaft vibration through an internal damping layer between the hub and outer pulley section. Over time, that damping material can deteriorate, allowing the outer ring to shift and creating belt misalignment, noise, and added stress on the crankshaft. ATP Parts 102028 is engineered as a standard replacement harmonic balancer that matches original fit and function for service on Ford Ranger, Ford Explorer, Ford Explorer Sport Trac, Ford Aerostar, Mercury Mountaineer, Mazda B4000, and Mazda Navajo applications.

This part cross-references Pioneer Automotive Industries DA-244 for the same application. ATP Parts 102028 is also listed with interchange references including 309452 and 594111.

Common Issues This Part Can Address

  • Crankshaft vibration from a worn or failed balancer
  • Belt misalignment caused by a shifted outer pulley ring
  • Serpentine belt tracking problems on the front of the engine
  • Noise or wobble from a deteriorated harmonic balancer
  • Crankshaft stress related to a broken balancer assembly

Installation Notes and Tips

Verify pulley groove count, outside diameter, and inside diameter before installation. Confirm the keyway and mounting-hole layout match the original part, and inspect the serpentine belt system for wear before reassembly. Because harmonic balancer failure can affect crankshaft operation, replace the unit promptly if the outer ring has shifted, the rubber layer has deteriorated, or the balancer shows visible damage.

Quality Assurance

ATP Parts 102028 is built as an OE-style replacement to fit and function like the original balancer, helping restore normal engine operation on confirmed Ford and Mazda applications.

This part fits 115 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelSubmodelDrive TypeTransmissionLitersCylindersFuel TypePositionNotes
2010MazdaB4000SE4WDManual4.0LV6GASN/APioneer Availability: Available to Order; OE Replacement Balancer
2009MazdaB4000DSRWDManual4.0LV6GASN/APioneer Availability: Available to Order; OE Replacement Balancer
2008MazdaB4000DSRWDManual4.0LV6GASN/APioneer Availability: Available to Order; OE Replacement Balancer
2007MazdaB4000BaseRWDManual4.0LV6GASN/APioneer Availability: Available to Order; OE Replacement Balancer
2006MazdaB4000BaseRWDManual4.0LV6GASN/APioneer Availability: Available to Order; OE Replacement Balancer
2005MazdaB4000BaseRWDManual4.0LV6GASN/APioneer Availability: Available to Order; OE Replacement Balancer
2004MazdaB4000DSRWDManual4.0LV6GASN/APioneer Availability: Available to Order; OE Replacement Balancer
2003FordExplorer SportXLSRWDManual4.0LV6GASN/APioneer Availability: Available to Order; OE Replacement Balancer
2003FordExplorer Sport Trac4.0LV6N/AGroove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
2003FordExplorer Sport Trac4.0LV6N/ADescription: Groove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
2003FordRanger4.0LV6N/AGroove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
2003FordRanger4.0LV6N/ADescription: Groove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
2003MazdaB4000DSRWDManual4.0LV6GASN/APioneer Availability: Available to Order; OE Replacement Balancer
2002FordExplorer4.0LV6N/AGroove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
2002FordExplorer4.0LV6N/ADescription: Groove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
2002FordExplorer SportBaseRWDManual4.0LV6GASN/APioneer Availability: Available to Order; OE Replacement Balancer
2002FordExplorer Sport Trac4.0LV6N/AGroove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
2002FordExplorer Sport Trac4.0LV6N/ADescription: Groove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
2002FordRanger4.0LV6N/AGroove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
2002FordRanger4.0LV6N/ADescription: Groove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
2002MazdaB4000Manual4.0LV6GASN/APioneer Availability: Available to Order; OE Replacement Balancer
2002MercuryMountaineer4.0LV6N/AGroove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
2002MercuryMountaineer4.0LV6N/ADescription: Groove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
2001FordExplorer4.0LV6N/AGroove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
2001FordExplorer4.0LV6N/ADescription: Groove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
2001FordExplorer SportBaseRWDAutomatic4.0LV6GASN/APioneer Availability: Available to Order; OE Replacement Balancer
2001FordExplorer Sport Trac4.0LV6N/AGroove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
2001FordExplorer Sport Trac4.0LV6N/ADescription: Groove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
2001FordRanger4.0LV6N/AGroove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
2001FordRanger4.0LV6N/ADescription: Groove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
2001MazdaB4000DSRWDManual4.0LV6GASN/APioneer Availability: Available to Order; OE Replacement Balancer
2001MercuryMountaineer4.0LV6N/AGroove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
2001MercuryMountaineer4.0LV6N/ADescription: Groove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
2000FordExplorer4.0LV6N/AGroove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
2000FordExplorer4.0LV6N/ADescription: Groove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
2000FordRanger4.0LV6N/AGroove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
2000FordRanger4.0LV6N/ADescription: Groove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
2000MazdaB4000Manual4.0LV6GASN/APioneer Availability: Available to Order; OE Replacement Balancer
2000MercuryMountaineer4.0LV6N/AGroove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
2000MercuryMountaineer4.0LV6N/ADescription: Groove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1999FordExplorer4.0LV6N/AGroove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1999FordExplorer4.0LV6N/ADescription: Groove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1999FordRanger4.0LV6N/AGroove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1999FordRanger4.0LV6N/ADescription: Groove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1999MazdaB4000SERWDManual4.0LV6GASN/APioneer Availability: Available to Order; OE Replacement Balancer
1999MercuryMountaineer4.0LV6N/AGroove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1999MercuryMountaineer4.0LV6N/ADescription: Groove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1998FordExplorer4.0LV6N/AGroove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1998FordExplorer4.0LV6N/ADescription: Groove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1998FordRanger4.0LV6N/AGroove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1998FordRanger4.0LV6N/ADescription: Groove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1998MazdaB4000SERWDManual4.0LV6GASN/APioneer Availability: Available to Order; OE Replacement Balancer
1998MercuryMountaineer4.0LV6N/AGroove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1998MercuryMountaineer4.0LV6N/ADescription: Groove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1997FordAerostar4.0LV6N/AGroove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1997FordAerostar4.0LV6N/ADescription: Groove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1997FordExplorer4.0LV6N/AGroove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1997FordExplorer4.0LV6N/ADescription: Groove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1997FordRanger4.0LV6N/AGroove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1997FordRanger4.0LV6N/ADescription: Groove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1997MazdaB4000SERWDManual4.0LV6GASN/APioneer Availability: Available to Order; OE Replacement Balancer
1996FordAerostar4.0LV6N/AGroove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1996FordAerostar4.0LV6N/ADescription: Groove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1996FordExplorer4.0LV6N/AGroove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1996FordExplorer4.0LV6N/ADescription: Groove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1996FordRanger4.0LV6N/AGroove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1996FordRanger4.0LV6N/ADescription: Groove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1996MazdaB40004.0LV6N/AGroove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1996MazdaB40004.0LV6N/ADescription: Groove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1995FordAerostar4.0LV6N/AGroove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1995FordAerostar4.0LV6N/ADescription: Groove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1995FordExplorer4.0LV6N/AGroove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1995FordExplorer4.0LV6N/ADescription: Groove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1995FordRanger4.0LV6N/AGroove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1995FordRanger4.0LV6N/ADescription: Groove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1995MazdaB40004.0LV6N/AGroove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1995MazdaB40004.0LV6N/ADescription: Groove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1994FordAerostar4.0LV6N/AGroove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1994FordAerostar4.0LV6N/ADescription: Groove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1994FordExplorer4.0LV6N/AGroove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1994FordExplorer4.0LV6N/ADescription: Groove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1994FordRanger4.0LV6N/AGroove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1994FordRanger4.0LV6N/ADescription: Groove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1994MazdaB40004.0LV6N/AGroove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1994MazdaB40004.0LV6N/ADescription: Groove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1994MazdaNavajo4.0LV6N/AGroove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1994MazdaNavajo4.0LV6N/ADescription: Groove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1993FordAerostar4.0LV6N/AGroove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1993FordAerostar4.0LV6N/ADescription: Groove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1993FordExplorer4.0LV6N/AGroove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1993FordExplorer4.0LV6N/ADescription: Groove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1993FordRanger4.0LV6N/AGroove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1993FordRanger4.0LV6N/ADescription: Groove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1993MazdaNavajo4.0LV6N/AGroove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1993MazdaNavajo4.0LV6N/ADescription: Groove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1992FordAerostar4.0LV6N/AGroove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1992FordAerostar4.0LV6N/ADescription: Groove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1992FordExplorer4.0LV6N/AGroove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1992FordExplorer4.0LV6N/ADescription: Groove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1992FordRanger4.0LV6N/AGroove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1992FordRanger4.0LV6N/ADescription: Groove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1992MazdaNavajo4.0LV6N/AGroove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1992MazdaNavajo4.0LV6N/ADescription: Groove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1991FordAerostar4.0LV6N/AGroove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1991FordAerostar4.0LV6N/ADescription: Groove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1991FordExplorer4.0LV6N/AGroove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1991FordExplorer4.0LV6N/ADescription: Groove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1991FordRanger4.0LV6N/AGroove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1991FordRanger4.0LV6N/ADescription: Groove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1991MazdaNavajo4.0LV6N/AGroove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1991MazdaNavajo4.0LV6N/ADescription: Groove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1990FordAerostar4.0LV6N/AGroove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1990FordAerostar4.0LV6N/ADescription: Groove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1990FordRanger4.0LV6N/AGroove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
1990FordRanger4.0LV6N/ADescription: Groove Qty. 6; Part Type: Serpentine; Outer Diameter: 6.00 in; OE Replacement Balancer
Directly replaces or cross-references 13 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Pioneer Automotive Industries — DA-2443094525941116005266DA244F0TZ6B321AFOTZ6B321AP-F245PB1103-NPC2023PC2047V1168XL2Z6312BA