Ford New Holland 7840O Tractor Parts
7840O parts and accessories
The Ford New Holland 7840O tractor, manufactured from 1992 to 1996, was a popular choice for farmers due to its reliable performance and versatile capabilities. Powered by a robust Ford 4.5L diesel engine producing around 95 horsepower, the 7840O delivered approximately 80 PTO horsepower. Its robust build and ease of operation made it a workhorse on many farms.
The Ford New Holland 7840O was part of the highly successful 40 Series tractor line introduced in the early 1990s. This model, produced between 1992 and 1996, was designed to provide a balance of power and maneuverability for a variety of agricultural tasks. It features a Ford 4.5L (274 cubic inch) inline 4-cylinder diesel engine that delivers approximately 95 engine horsepower. The transmission options included a standard 12x12 Synchro Shift transmission, providing a good range of speeds for different field conditions, or an optional Dual Power transmission. The PTO delivers around 80 horsepower and is available in both 540 and 1000 RPM configurations. Hydraulically, the 7840O offers a flow rate of approximately 17 GPM with typically two remote valves. It features a Category II 3-point hitch. Common applications for the 7840O include row crop work, hay production, livestock operations, and light tillage. What distinguished the 7840O from other models in the lineup was its optimal blend of power and size, making it suitable for farms of various sizes and operational needs.
Specifications
| Engine | Ford 4.5L 95 HP Diesel |
|---|---|
| PTO HP | 80 HP @ 540/1000 RPM |
| Transmission | 12x12 Synchro Shift or Dual Power |
| Hydraulics | 17 GPM, 2 remotes |
| 3-Point Hitch | Category II, 4762 lbs lift capacity |
| Fuel Capacity | 32 gallons |
| Weight | 8185 lbs |
| Years Produced | 1992-1996 |
Maintenance Tips
- Change the engine oil and filter every 250 hours using a high-quality oil that meets Ford's specifications. Regularly inspect the air filter and clean or replace as needed.
- Inspect hydraulic fluid levels and condition regularly. Change the hydraulic fluid and filter every 1200 hours to maintain optimal performance and prevent damage to hydraulic components.
- Use clean, high-quality fuel and add a fuel stabilizer during seasonal storage to prevent fuel degradation and injector clogging. Drain any water from the fuel/water separator regularly.
- Before storing the tractor for an extended period, perform a full service, including lubricating all grease points, checking coolant levels, and disconnecting the battery to prevent discharge. Store the tractor in a dry, covered area.
History & Background
The Ford New Holland 7840O was introduced in 1992 as part of the updated 40 Series. It built upon the success of previous Ford tractor models, incorporating improvements in engine technology and transmission options. The 7840O played a significant role in modernizing agricultural practices by offering a reliable and versatile machine for various farming tasks.
Frequently Asked Questions
What engine is in the Ford New Holland 7840O?
The Ford New Holland 7840O is equipped with a Ford 4.5L (274 cubic inch) inline 4-cylinder diesel engine, producing approximately 95 horsepower.
What is the PTO horsepower on a 7840O?
The Ford New Holland 7840O delivers around 80 PTO horsepower. It is available in both 540 and 1000 RPM configurations.
What oil filter fits the 7840O?
The recommended oil filter for the Ford New Holland 7840O is a Ford E6NN6714AA or equivalent. Common cross-references include Fram PH3600, Wix 51773, and Baldwin B1421.
What are common parts needed for the 7840O?
Common wear parts for the Ford New Holland 7840O include engine oil filters, fuel filters, air filters, hydraulic filters, belts (fan, alternator), hydraulic seals, steering components (tie rod ends, ball joints), and clutch parts. Regular inspection and replacement of these parts can help maintain the tractor's performance and longevity.

FDPN6A008B - Lower without Seals Gasket Set
SKU: FDPN6A008B
13 in stock

FDPN6008B - Upper Gasket Set
SKU: FDPN6008B
8 in stock

F2NN6518AA - Valve Keeper
SKU: F2NN6518AA
2798 in stock

F2NN6200BA - Connecting Rod
SKU: F2NN6200BA
9 in stock

F1NN6375AA - Flywheel
SKU: F1NN6375AA
76 in stock

E9NN6507AC - INTAKE VALVE
SKU: E9NN6507AC
13 in stock

E9NN6505EC - EXHAUST VALVE
SKU: E9NN6505EC
14 in stock

E5NN6701BA - Rear Crankshaft Seal
SKU: E5NN6701BA
307 in stock

E1NN9A436AA - Heater Plug
SKU: E1NN9A436AA
48 in stock

E0NN6051DA - Head Gasket
SKU: E0NN6051DA
6 in stock

D8NN6584AA - Head Cover Gasket
SKU: D8NN6584AA
8 in stock

D5NN6700A - Front Crankshaft Seal
SKU: D5NN6700A
33 in stock

CRB2952-20 - Connecting Rod (.020") (Std) Bearing Set
SKU: CRB2952-20
8 in stock

CRB2951-10 - Connecting Rod (.010") (Std) Bearing Set
SKU: CRB2951-10
11 in stock

CRB2950 - Connecting Rod (Std) Bearing Set
SKU: CRB2950
39 in stock

CFPN6A008C - Lower with Seals Gasket Set
SKU: CFPN6A008C
52 in stock

C7NN6500B - Camshaft Follower
SKU: C7NN6500B
327 in stock
C5NNN779B - SUB TO 6108
SKU: C5NNN779B
84 in stock

C5NE6261B - Camshaft Bearing
SKU: C5NE6261B
289 in stock

C5NE6207A - Connecting Rod Bushing
SKU: C5NE6207A
303 in stock

9672548 - O-Ring
SKU: 9672548
351 in stock

87840995 - Connecting Rod Bushing
SKU: 87840995
57 in stock

87802834 - Piston Ring Set
SKU: 87802834
74 in stock

87802373 - PISTON WITH RINGS
SKU: 87802373
49 in stock
