Oldsmobile 98 Engine Harmonic Balancer Replacement

Part Type: Solid Outer Diameter: 6.79 in ATP Number: 102037 ATP Availability: Available to Order Pioneer Number: DA-4551 Pioneer Availability: Available to Order

Part Type: Solid Outer Diameter: 6.50 in ATP Number: 102122 ATP Availability: Discontinued Pioneer Number: N/A Pioneer Availability: N/A 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

Direct Replacement

Groove Qty. 6 Part Type: Serpentine Outer Diameter: 6.921 in ATP Number: 102073 ATP Availability: Available to Order Pioneer Number: DA-2315 Pioneer Availability: Available to Order

Groove Qty. 6 Part Type: Serpentine Outer Diameter: 7.07 in ATP Number: 102074 ATP Availability: Available to Order Pioneer Number: DA-2316 Pioneer Availability: Available to Order

Fits SB Chevy Engines;Internally Balanced; Diameter:6 3/4-in.; Finish:Natural; Material:Nodular Iron

Description: Groove Qty. 6 Part Type: Serpentine Outer Diameter: 7.07 in

Description: Groove Qty. 6 Part Type: Serpentine Outer Diameter: 6.921 in

Groove Qty. 6 Part Type: Serpentine Outer Diameter: 7 in ATP Number: 102072 ATP Availability: Available to Order Pioneer Number: DA-2314 Pioneer Availability: Available to Order

Direct Replacement

Description: Groove Qty. 6 Part Type: Serpentine Outer Diameter: 7 in

Description: Groove Qty. 6, 6 Part Type: Double Serpentine Outer Diameter: 7.17 in

Groove Qty. 6 Part Type: Serpentine Outer Diameter: 7 1/8 in ATP Number: 102068 ATP Availability: Available to Order Pioneer Number: DA-2312 Pioneer Availability: Available to Order

Description: Groove Qty. 6; W/ 1 In Weight (Small) Opposite Key-Way Part Type: Serpentine Outer Diameter: 7.062 in

Description: Groove Qty. 6 Part Type: Serpentine Outer Diameter: 7 1/8 in

Fits SB Chevy Engines;Internally Balanced; Diameter:8-in.; Finish:Natural; Material:Nodular Iron

Externally Balanced; Diameter:8-in.; Finish:Natural; Material:Nodular Iron

Stamped 25527381 or 25527009

6.50 in. OD; External Balance; Black

Description: Groove Qty. 6 Part Type: Serpentine Outer Diameter: 7 in

Stamped 25532179

SFI Spec 18.1; Steel/Elastomer; External Balance; 6.50 in. OD; Black

Description: 4 Bolt Hub; W/ 50 oz Weight Part Type: Solid Outer Diameter: 6.79 in

Bore Dia. Min/Max: 1.3722 / 1.3732 Degree Marking Range: 50 BTDC to 10 ATDC. Additional timing/degree marks at 90, 180 and 270 Degree Markings: Yes Engine Balance: Internal Finish: Black Zinc Keyway: Single Length: 2.837 Material: Steel Mounting Hardware Incl.: No O.D.: 6-5/8" (6.625) Safety Rating: SFI 18.1 WT. in lbs.()=Rotating weight: 10.4 (7.0 Rwt) 4 bolt pattern on 3.300 circle. Holes in pulley must be re-drilled. '69-later timing cover & pulleys may be required on Early Models.

Bore Dia. Min/Max: 1.4980 / 1.4985 Degree Marking Range: 50 BTDC to 10 ATDC. Additional timing/degree marks at 90, 180 and 270 Degree Markings: Yes Engine Balance: External (25 oz) Finish: Black Zinc Keyway: Single Length: 3.04 Material: Steel Mounting Hardware Incl.: No O.D.: 6-5/8" (6.625) Safety Rating: SFI 18.1 WT. in lbs.()=Rotating weight: 12.8 (8.5 Rwt) Big Block

Part Type: Solid Outer Diameter: 6.74 in