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Specifications
| Output | 130 |
|---|---|
| Voltage | 12 |
| Type | Alternator |
| Design | IR/EF |
| Rotation | BI |
| Manufacturer | DELCO |
| Series | 21SI |
| Pulley | S7 |
| Pulley groove OD | 57 |
| Plug code | 151 |
| Plug clock | 12 |
| Lester number | 7971 |
| PIC code | 240-856, 240-856B, 240-856A |
| Notes | The 7971 is a 130A Can Use For the Lower Amp 7666 and 8010 (Both 100A). All Have a Special B+ Insulator With a Cable Guide, and the "R" Terminal Stud is Located in "I" Terminal Hole. Higher Amp Alternatives Are: 7665 (145-160A) 5/16" B+ 10-24 "R" Terminal No "I" Terminal 6 Avalanche Diodes Amperage Depends on Pulley Diameter. | This is the Same Unit as the 240-856, Except This Unses the Later Rotor Shaft, and Larger Rear Bearing. The 7971 is a 130A Can Use For the Lower Amp 7666 and 8010 (Both 100A). All Have a Special B+ Insulator With a Cable Guide, and the "R" Terminal Stud is Located in "I" Terminal Hole. Higher Amp Alternatives Are: 7665 (145-160A) 5/16" B+ 10-24 "R" Terminal No "I" Terminal 6 Avalanche Diodes Amperage Depends on Pulley Diameter. |
Confirmed fitment
Verified applications from the ePartsGlobal catalog. If your engine isn't listed, send us the OEM part number and we'll cross-reference it.
| Make | Model | Engine | Years | Application |
|---|---|---|---|---|
| Chevrolet Medium/Heavy Truck | C5500 Kodiak | V8 6.0L 366cid General Motors LS0 | 1990–1991 | Medium/Heavy Truck · domestic |
| Chevrolet Medium/Heavy Truck | C60 | V8 6.0L 366cid General Motors LS0 | 1989–1990 | Medium/Heavy Truck · domestic |
| Chevrolet Medium/Heavy Truck | C70 | V8 6.0L 366cid General Motors LS0 | 1989–1990 | Medium/Heavy Truck · domestic |
| Chevrolet Van | P30 | V8 6.2L 379cid | 1991–1993 | Van · domestic |
| GMC Medium/Heavy Truck | C5000 Topkick | V8 6.0L 366cid General Motors LS0 | 1990–1991 | Medium/Heavy Truck · domestic |
| GMC Medium/Heavy Truck | C6000 | V8 6.0L 366cid General Motors LS0 | 1989–1990 | Medium/Heavy Truck · domestic |
| GMC Medium/Heavy Truck | C7000 | V8 6.0L 366cid General Motors LS0 | 1989–1990 | Medium/Heavy Truck · domestic |
| GMC Van | P3500 | V8 6.2L 379cid | 1991–1993 | Van · domestic |
| Chevrolet Medium/Heavy Truck | B7 | 6 Cyl. 6.6L 403cid Caterpillar | 1999–2000 | Medium/Heavy Truck · domestic |
| Chevrolet Medium/Heavy Truck | B7 | L6 6.6L 403cid Caterpillar | 1994–1998 | Medium/Heavy Truck · domestic |
| Chevrolet Medium/Heavy Truck | B7 | L6 7.2L 441cid Caterpillar | 1998–2002 | Medium/Heavy Truck · domestic |
| Chevrolet Medium/Heavy Truck | C4500 Kodiak | Caterpillar | 1997–2002 | Medium/Heavy Truck · domestic |
| Chevrolet Medium/Heavy Truck | C4500 Kodiak | Caterpillar | 1998–2002 | Medium/Heavy Truck · domestic |
| Chevrolet Medium/Heavy Truck | C4500 Kodiak | Caterpillar C7 | 1997–2002 | Medium/Heavy Truck · domestic |
| Chevrolet Medium/Heavy Truck | C50 | Caterpillar | 1994–2002 | Medium/Heavy Truck · domestic |
| Chevrolet Medium/Heavy Truck | C50 | Caterpillar | 1998–2002 | Medium/Heavy Truck · domestic |
| Chevrolet Medium/Heavy Truck | C5500 Kodiak | Caterpillar | 1994–2002 | Medium/Heavy Truck · domestic |
| Chevrolet Medium/Heavy Truck | C5500 Kodiak | Caterpillar | 1998–2002 | Medium/Heavy Truck · domestic |
| Chevrolet Medium/Heavy Truck | C5500 Kodiak | Caterpillar C7 | 1997–2002 | Medium/Heavy Truck · domestic |
| Chevrolet Medium/Heavy Truck | C60 | Caterpillar | 1994–2002 | Medium/Heavy Truck · domestic |
| Chevrolet Medium/Heavy Truck | C60 | Caterpillar | 1998–2002 | Medium/Heavy Truck · domestic |
| Chevrolet Medium/Heavy Truck | C60 Kodiak | Caterpillar C7 | 1997–1999 | Medium/Heavy Truck · domestic |
| Chevrolet Medium/Heavy Truck | C60 Kodiak | L6 6.6L 403cid Caterpillar | 1994–1996 | Medium/Heavy Truck · domestic |
| Chevrolet Medium/Heavy Truck | C6500 Kodiak | Caterpillar | 1994–1996 | Medium/Heavy Truck · domestic |
| Chevrolet Medium/Heavy Truck | C6500 Kodiak | L6 6.6L 403cid Caterpillar | 1997–1998 | Medium/Heavy Truck · domestic |
| Chevrolet Medium/Heavy Truck | C6500 Kodiak | L6 7.2L 441cid | 1997–1998 | Medium/Heavy Truck · domestic |
| Chevrolet Medium/Heavy Truck | C6500 Kodiak | L6 7.2L 441cid Caterpillar | 1999–2002 | Medium/Heavy Truck · domestic |
| Chevrolet Medium/Heavy Truck | C70 | Caterpillar | 1994–2002 | Medium/Heavy Truck · domestic |
| Chevrolet Medium/Heavy Truck | C70 | Caterpillar | 1998–2002 | Medium/Heavy Truck · domestic |
| Chevrolet Medium/Heavy Truck | C70 Kodiak | L6 6.6L 403cid Caterpillar | 1994–1996 | Medium/Heavy Truck · domestic |
| Chevrolet Medium/Heavy Truck | C7500 Kodiak | 6 Cyl. 7.2L 441cid | 1997–1998 | Medium/Heavy Truck · domestic |
| Chevrolet Medium/Heavy Truck | C7500 Kodiak | Caterpillar | 1994–1996 | Medium/Heavy Truck · domestic |
| Chevrolet Medium/Heavy Truck | C7500 Kodiak | L6 6.6L 403cid Caterpillar | 1997–1998 | Medium/Heavy Truck · domestic |
| Chevrolet Medium/Heavy Truck | C7500 Kodiak | L6 7.2L 441cid Caterpillar | 1999–2002 | Medium/Heavy Truck · domestic |
| Chevrolet Medium/Heavy Truck | C80 | Caterpillar | 1994–2000 | Medium/Heavy Truck · domestic |
| Chevrolet Medium/Heavy Truck | C80 | Caterpillar | 1998–2002 | Medium/Heavy Truck · domestic |
| Chevrolet Medium/Heavy Truck | F6 Series | Caterpillar | 1997–1998 | Medium/Heavy Truck · domestic |
| Chevrolet Medium/Heavy Truck | F7 Series | Caterpillar | 1997–1998 | Medium/Heavy Truck · domestic |
| Chevrolet Medium/Heavy Truck | Kodiak C8500 | Caterpillar | 1994–2002 | Medium/Heavy Truck · domestic |
| Chevrolet Medium/Heavy Truck | Kodiak C8500 | Caterpillar | 1998–2002 | Medium/Heavy Truck · domestic |
| Chevrolet Medium/Heavy Truck | Kodiak C8500 | Caterpillar C7 | 1997–2002 | Medium/Heavy Truck · domestic |
| Chevrolet Medium/Heavy Truck | P6000 | L6 6.6L 403cid Caterpillar | 1995–1996 | Medium/Heavy Truck · domestic |
| Chevrolet Medium/Heavy Truck | P7 | Caterpillar | 1995–1996 | Medium/Heavy Truck · domestic |
| Chevrolet Medium/Heavy Truck | T5500 | Caterpillar | 1997–1998 | Medium/Heavy Truck · domestic |
| Chevrolet Medium/Heavy Truck | T5500 | Caterpillar | 1997–2002 | Medium/Heavy Truck · domestic |
| Chevrolet Medium/Heavy Truck | T6500 | 6 Cyl. 7.2L 441cid | 1997–1997 | Medium/Heavy Truck · domestic |
| Chevrolet Medium/Heavy Truck | T6500 | L6 6.6L 403cid Caterpillar | 1997–1998 | Medium/Heavy Truck · domestic |
| Chevrolet Medium/Heavy Truck | T6500 | L6 7.2L 441cid Caterpillar | 1998–2002 | Medium/Heavy Truck · domestic |
| Chevrolet Medium/Heavy Truck | T7500 | 6 Cyl. 7.2L 441cid | 1997–1997 | Medium/Heavy Truck · domestic |
| Chevrolet Medium/Heavy Truck | T7500 | L6 6.6L 403cid Caterpillar | 1997–1998 | Medium/Heavy Truck · domestic |
| Chevrolet Medium/Heavy Truck | T7500 | L6 7.2L 441cid Caterpillar | 1998–2002 | Medium/Heavy Truck · domestic |
| Chevrolet Medium/Heavy Truck | T8500 Series | Caterpillar | 1997–1998 | Medium/Heavy Truck · domestic |
| Chevrolet Medium/Heavy Truck | T8500 Series | Caterpillar | 1997–2002 | Medium/Heavy Truck · domestic |
| GMC Medium/Heavy Truck | B7 | 6 Cyl. 6.6L 403cid Caterpillar | 1999–2000 | Medium/Heavy Truck · domestic |
| GMC Medium/Heavy Truck | B7 | L6 6.6L 403cid Caterpillar | 1994–1998 | Medium/Heavy Truck · domestic |
| GMC Medium/Heavy Truck | B7 | L6 7.2L 441cid Caterpillar | 1998–2002 | Medium/Heavy Truck · domestic |
| GMC Medium/Heavy Truck | C4500 Topkick | Caterpillar | 1997–2002 | Medium/Heavy Truck · domestic |
| GMC Medium/Heavy Truck | C4500 Topkick | Caterpillar | 1998–2002 | Medium/Heavy Truck · domestic |
| GMC Medium/Heavy Truck | C4500 Topkick | Caterpillar C7 | 1997–2002 | Medium/Heavy Truck · domestic |
| GMC Medium/Heavy Truck | C5000 | Caterpillar | 1994–2002 | Medium/Heavy Truck · domestic |
| GMC Medium/Heavy Truck | C5000 | Caterpillar | 1998–2002 | Medium/Heavy Truck · domestic |
| GMC Medium/Heavy Truck | C5500 Topkick | Caterpillar | 1994–2002 | Medium/Heavy Truck · domestic |
| GMC Medium/Heavy Truck | C5500 Topkick | Caterpillar | 1998–2002 | Medium/Heavy Truck · domestic |
| GMC Medium/Heavy Truck | C5500 Topkick | Caterpillar C7 | 1997–2002 | Medium/Heavy Truck · domestic |
| GMC Medium/Heavy Truck | C6000 | Caterpillar | 1994–2000 | Medium/Heavy Truck · domestic |
| GMC Medium/Heavy Truck | C6000 | Caterpillar | 1998–2002 | Medium/Heavy Truck · domestic |
| GMC Medium/Heavy Truck | C6000 Topkick | L6 6.6L 403cid Caterpillar | 1994–1996 | Medium/Heavy Truck · domestic |
| GMC Medium/Heavy Truck | C6500 Topkick | L6 6.6L 403cid | 1994–1996 | Medium/Heavy Truck · domestic |
| GMC Medium/Heavy Truck | C6500 Topkick | L6 6.6L 403cid | 1999–2000 | Medium/Heavy Truck · domestic |
| GMC Medium/Heavy Truck | C6500 Topkick | L6 6.6L 403cid Caterpillar | 1997–1998 | Medium/Heavy Truck · domestic |
| GMC Medium/Heavy Truck | C6500 Topkick | L6 7.2L 441cid | 1997–1998 | Medium/Heavy Truck · domestic |
| GMC Medium/Heavy Truck | C6500 Topkick | L6 7.2L 441cid Caterpillar | 1999–2002 | Medium/Heavy Truck · domestic |
| GMC Medium/Heavy Truck | C7000 | Caterpillar | 1994–2002 | Medium/Heavy Truck · domestic |
| GMC Medium/Heavy Truck | C7000 | Caterpillar | 1998–2002 | Medium/Heavy Truck · domestic |
| GMC Medium/Heavy Truck | C7000 Topkick | L6 6.6L 403cid Caterpillar | 1994–1996 | Medium/Heavy Truck · domestic |
| GMC Medium/Heavy Truck | C7500 Topkick | Caterpillar | 1994–1996 | Medium/Heavy Truck · domestic |
| GMC Medium/Heavy Truck | C7500 Topkick | L6 6.6L 403cid Caterpillar | 1997–1998 | Medium/Heavy Truck · domestic |
| GMC Medium/Heavy Truck | C7500 Topkick | L6 7.2L 441cid | 1997–1998 | Medium/Heavy Truck · domestic |
| GMC Medium/Heavy Truck | C7500 Topkick | L6 7.2L 441cid Caterpillar | 1999–2002 | Medium/Heavy Truck · domestic |
| GMC Medium/Heavy Truck | C80 | Caterpillar | 1994–2000 | Medium/Heavy Truck · domestic |
| GMC Medium/Heavy Truck | C80 | Caterpillar | 1998–2002 | Medium/Heavy Truck · domestic |
| GMC Medium/Heavy Truck | F6 Series | Caterpillar | 1997–1998 | Medium/Heavy Truck · domestic |
| GMC Medium/Heavy Truck | F7 Series | Caterpillar | 1997–1998 | Medium/Heavy Truck · domestic |
| GMC Medium/Heavy Truck | P6500 | L6 6.6L 403cid Caterpillar | 1995–1996 | Medium/Heavy Truck · domestic |
| GMC Medium/Heavy Truck | P7 | Caterpillar | 1995–1996 | Medium/Heavy Truck · domestic |
| GMC Medium/Heavy Truck | T5500 | Caterpillar | 1997–1998 | Medium/Heavy Truck · domestic |
| GMC Medium/Heavy Truck | T5500 | Caterpillar | 1997–2002 | Medium/Heavy Truck · domestic |
| GMC Medium/Heavy Truck | T6500 | L6 6.6L 403cid Caterpillar | 1997–1998 | Medium/Heavy Truck · domestic |
| GMC Medium/Heavy Truck | T6500 | L6 7.2L 441cid Caterpillar | 1998–2002 | Medium/Heavy Truck · domestic |
| GMC Medium/Heavy Truck | T7500 | L6 6.6L 403cid Caterpillar | 1997–1998 | Medium/Heavy Truck · domestic |
| GMC Medium/Heavy Truck | T7500 | L6 7.2L 441cid Caterpillar | 1998–2002 | Medium/Heavy Truck · domestic |
| GMC Medium/Heavy Truck | T8500 | Caterpillar | 1997–1998 | Medium/Heavy Truck · domestic |
| GMC Medium/Heavy Truck | T8500 | Caterpillar | 1997–2002 | Medium/Heavy Truck · domestic |
| GMC Medium/Heavy Truck | Topkick C8500 | Caterpillar | 1994–2002 | Medium/Heavy Truck · domestic |
| GMC Medium/Heavy Truck | Topkick C8500 | Caterpillar | 1998–2002 | Medium/Heavy Truck · domestic |
| GMC Medium/Heavy Truck | Topkick C8500 | Caterpillar C7 | 1997–2002 | Medium/Heavy Truck · domestic |
Cross-reference
OEM and aftermarket part numbers that interchange with this unit, from the ePartsGlobal catalog.
WAI New7971N
Bepco Old4877X
Bosch RemanufacturedAL10014X
Cummins3675157RX
Delco1117896, 1117904, 1117928
Lester7971
Machinery ComponentsGM-218
New Tech HON7971HO
Stratoline (Old)4877X
Delco1117908
Delco19010113
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