Ford New Holland 4121 Tractor Parts
4121 parts and accessories
The Ford New Holland 4121 tractor, produced in the early 1980s, provided farmers with a reliable workhorse known for its versatility. Typically powered by a diesel engine in the 50-60 horsepower range, the 4121 delivered sufficient PTO horsepower for a variety of implements. Its reputation for dependability and ease of maintenance made it a popular choice for small to medium-sized farms.
The Ford New Holland 4121 was manufactured during the early to mid 1980s as part of Ford's strategy to offer a range of tractors catering to different farm sizes and needs. The 4121 typically features a Shibaura diesel engine, producing around 52 to 57 horsepower. Engine displacement is approximately 179 cubic inches (2.9 liters). These tractors were primarily offered with a mechanical gear transmission, typically an 8-speed forward and 2-speed reverse gearbox, providing a good range of speeds for various field operations. The rear PTO delivers around 45-50 horsepower, usually at the standard 540 RPM. Hydraulic capacity is around 8-10 gallons per minute, adequate for operating implements like loaders and disc harrows. The 3-point hitch is typically a Category I or II, depending on the configuration, with a lift capacity around 2500-3000 lbs. Common farming applications for the 4121 include hay baling, light tillage, row crop work, and livestock feeding operations. Compared to larger Ford models, the 4121 is more compact and fuel-efficient, making it ideal for smaller farms or operations requiring maneuverability.
Specifications
| Engine | Shibaura 52-57 HP 179 ci Diesel |
|---|---|
| PTO HP | 45-50 HP @ 540 RPM |
| Transmission | Gear 8 Forward, 2 Reverse |
| Hydraulics | 8-10 GPM, 2 remotes |
| 3-Point Hitch | Category I/II, 2500-3000 lbs |
| Fuel Capacity | 16 gallons |
| Weight | 5100 lbs |
| Years Produced | Early to mid 1980s |
Maintenance Tips
- Engine Oil & Filter: Change engine oil and filter every 250 hours of operation. Use a high-quality diesel engine oil with the appropriate API rating and a filter that meets OEM specifications.
- Hydraulic System: Inspect hydraulic fluid levels regularly and change the hydraulic filter every 500 hours. Use the correct hydraulic fluid type recommended by Ford New Holland to prevent damage to seals and components.
- Fuel System: Drain any water accumulation from the fuel tank regularly, especially before periods of storage. Replace the fuel filter annually to ensure clean fuel delivery and prevent injector clogging.
- Seasonal Storage: Before storing the tractor for the winter, add a fuel stabilizer to the fuel tank, grease all lubrication points, and disconnect the battery. Store the tractor in a dry location to prevent rust and corrosion.
History & Background
The Ford New Holland 4121 was introduced as part of Ford's broad range of utility tractors, designed to meet the diverse needs of farmers. While specific updates and redesigns were minimal during its production run, the 4121 remains a testament to Ford's commitment to providing durable and reliable agricultural equipment, contributing significantly to farming efficiency during its era.
Frequently Asked Questions
What engine is in the Ford New Holland 4121?
The Ford New Holland 4121 typically features a Shibaura diesel engine with a displacement of approximately 179 cubic inches (2.9 liters). It is rated between 52-57 horsepower.
What is the PTO horsepower on a 4121?
The PTO horsepower on the Ford New Holland 4121 is typically around 45-50 horsepower at 540 RPM.
What oil filter fits the 4121?
A common oil filter for the Ford New Holland 4121 is a Fram PH3600 or a Wix 51348. Always verify compatibility with your specific tractor's serial number.
What are common parts needed for the 4121?
Common parts needed for the Ford New Holland 4121 include engine oil filters, fuel filters, hydraulic filters, fan belts, hydraulic pump seals, steering cylinder seals, clutch discs, and throwout bearings.

D6NN7R240B - Transmission Output Shaft Oil Seal
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CR15141 - Differential Pinion Seal
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C8AP7B442A - External Splines PTO Clutch Plate
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C5NN7277C - Gear Shift Boot
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BB4625B - Differential Pinion Pilot Bearing
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B9NN7A381B - Transmission (2nd) Gear
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8N7102 - 3rd Gear
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8N7100 - 1st Gear
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8N7052A - Transmission Main Drive Gear Oil Seal
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86613263 - Transmission Output Gear Tapered Cup
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86533415 - Brake Drum
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83905584 - Shift Lever Knob
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