Introduction

Farm tractors, combines, graders, medium-duty trucks — different machines, same weak point. When the alternator goes, everything else follows. Dim lights. A battery that won't hold a charge. Then, one morning, nothing.

The alternator isn't glamorous, but it's the reason the engine keeps running once it's started. It charges the battery. It powers every light, gauge, and accessory on the machine. And on ag and industrial equipment, it works harder than it ever would in a car  running multiple circuits for hours at low RPM, often while the machine barely moves.

That's exactly what the Alternator 0115170 / Bosch 0-124-525-085 is built for. It's a direct-fit replacement across Case, Caterpillar, Agco, Ford, John Deere, Massey Ferguson, New Holland, and Volvo equipment, one part, a wide range of machines.

Here's everything you need to know before you buy: what it fits, the full spec sheet, the warning signs of a failing alternator, how to install it, how to keep it running longer, and what to double-check before you hit "order."

What Does This Alternator Do?

The battery's job ends the moment the engine starts. From there, the alternator takes over  turning the engine's mechanical energy into electrical power.

It recharges the battery. Runs the dashboard and gauge cluster. Keep the lighting system on. Powers work lights and accessory circuits. Keeps every onboard electronic system stable. On heavier equipment, it's also carrying hydraulic controls, cab electronics, and climate systems  often while the engine just idles for hours.

When it starts to weaken, you'll notice the small things first: a flicker here, a slow accessory there. Ignore it long enough, and the ending is always the same: a dead battery, and a machine stranded mid-job.

Overview of Alternator 0115170 / Bosch 0-124-525-085

Voltage: 12 volts

Power output: 160 amps

Type: Self-excited (doesn't need outside power to start charging)

Regulator: Built inside the unit

Cooling fan: Built inside the unit

Ground type: Negative ground

Mounting style: J180

Shaft size: 0.875 inch

Output stud sizes: M8-1.25 and M6-1.0

Terminals: M5-0.8 threaded, marked "I" (indicator) and "R" (AC tap)

Mounting hole distance (drive end): 8.0 inches

Weight: About 15.3 lbs (6.95 kg)

Idle performance: Still puts out 80 amps even when the engine is just idling

Cross-Reference Numbers

• Bosch 0-124-525-085

• Bluebird 0115170 / 115170

• Andre Niermann 02525085

• Bosch Newman AL9960LH

This unit is also designed to replace certain Delco and Leece Neville alternators used across the same equipment lines, which is useful if your machine's original part carried one of those brand names instead.

Compatible Applications

This alternator fits a wide range of ag and industrial equipment across many brands. Here's the fitment broken down brand by brand:

Case

• 9210, 9230, 9240 series → 6-504 diesel engine

• 9250, 9260 series → Cummins 6-611 diesel

• 9270, 9280 series → Cummins 6-855 diesel

• 9310–9390 series (through 2000) → standard and QT variants

Caterpillar

• Challenger tractors: 35, 45, 55, 65, 75, 85, 95 models

• Engines: 3116, 3126, 3176, 3196

• Production years: ~1990–2001

Cummins Engines (across brands)

• Case tractors

• Agco combines and tractorssss

• Volvo medium/heavy-duty trucks

• Engine families: N14, M11, L-10, 6-cylinder

• Also fits Cummins K Series industrial engines (early 1990s)

Ford

• Farm tractors only (not commercial trucks)

• 8670, 8770, 8870, 8970 series → 6-456 diesel

• 9280, 9480, 9680, 9880 series → 6-611 and 6-855 diesel

John Deere

• Loaders: 544E, 624E, 644E

• Skidders: 540E, 548E, 640E, 648E, 740E, 748E

• Tool carriers: 544E variants

• Era: late 1980s–early 1990s

Agco (Allis, Gleaner, Star, White)

• Agco Allis: 8000-series tractors (Cummins & Detroit Diesel engines)

• Agco Gleaner: C62, R42–R75 combines (Cummins engines)

• Agco Star and Agco White: various tractors

• Era: 1990s–early 2000s

Massey Ferguson

• Combines: MF-8680, MF-8780 → Cummins 8.3L engine

• Tractors: MF-8245–MF-8280 → Valment diesel engine

New Holland

• Combines: TX66, TX68

• Tractors: 8670–8970 series

• All use Ford-sourced diesel engines

Volvo

• Medium/heavy-duty trucks: ACL, VHD, VNL, VNM, WA/WC/WG/WH/WI/WX series

• Engines: Cummins, Caterpillar, Detroit Diesel, or Volvo VED

Champion

• Graders: 710, 710A, 716A

• Engine: Cummins 5.9L

Signs Your Alternator Needs Replacement

• A battery warning light appearing on the dash

• Headlights or work lights dimming noticeably, especially at idle

• A battery that keeps going dead even after being replaced

• Slower power windows, a weak blower motor, or flickering dashboard electronics

• Grinding, whining, or squealing noises from worn internal bearings

• A burning smell caused by overheating windings or a slipping belt

Why Choose a Quality Replacement

A properly specced alternator keeps voltage stable across the whole electrical system, protects the battery from over- or under-charging, and holds up to the long duty cycles typical of farm, construction, and trucking work — all of which reduces the chance of repeat failures and unplanned downtime.

Installation Tips

1. Disconnect the negative battery terminal before starting any work.

2. Inspect the drive belt and replace it if worn, cracked, or glazed.

3. Compare the old and new units for mounting point spacing, connector type, and pulley alignment.

4. Clean all electrical terminals with contact cleaner before reconnecting.

5. Torque mounting bolts to spec — overtightening can crack brackets or throw off pulley alignment.

6. After installation, start the engine and check charging voltage with a multimeter; a healthy reading is typically 13.8–14.7 volts.

Maintenance Tips to Extend Alternator Life

Check belt tension and condition regularly, keep the battery in good condition and replace it early if it's weakening, avoid spraying the alternator directly with a pressure washer, keep all wiring connections clean and tight, and repair any nearby oil leaks promptly since oil contamination can damage internal components.

Buying Tips

Before you order, check these off one by one:

1. OEM number — Match it to 0115170 / 0-124-525-085

2. Equipment details — Confirm your brand, model, and engine

3. Electrical specs — Should be 12V, 160A

4. Mount & shaft — J180 mount type, 0.875" shaft diameter

Why Buy from Denparts?

Denparts.ca supplies OEM-compatible replacement alternators, starters, and electrical components for automotive, agricultural, and industrial equipment, with competitive pricing, secure checkout, and fast shipping across Canada.

Conclusion

The Alternator 0115170 / Bosch 0-124-525-085 is a versatile, direct-fit replacement spanning Case, Caterpillar, Cummins-powered equipment, Ford, John Deere, Agco, Massey Ferguson, New Holland, Volvo, and Champion machines. Confirming the OEM number and matching engine details before ordering ensures a correct fit — shop Denparts for a dependable, Canada-wide-shipped replacement built to keep your equipment charging reliably.