Mechanical Diaphragm Fuel Supply Pump for Perkins Engines - Code 3801812
The mechanical diaphragm fuel feed supply pump (part number 3801812) is an essential replacement component engineered to deliver reliable diesel transfer from the fuel tank through filters to the injection pump on Perkins 3.152 3-cylinder diesel engines. Designed with a 2-hole mounting flange (45 mm hole spacing center-to-center) and an operating drive lever length of 28 mm from flange face to tip, it guarantees steady mechanical suction and optimal camshaft eccentric alignment. Fully interchangeable with original OEM references 2641311, 3637307M91, 4222111M91, 641A063, UPLK0006, it is tailored for wheeled, orchard, and crawler tractors across Landini and Massey Ferguson ranges.
Key Features and Construction Advantages
- Standard 2-Bolt Flange Geometry: Accurate 45 mm hole-to-hole pitch with 28 mm lever reach for direct fitment on Perkins 3.152 cylinder blocks.
- Reinforced Heavy-Duty Diaphragm: High chemical resistance to prolonged exposure to agricultural diesel fuel and modern biodiesel blends.
- Precision-Engineered Operating Lever: Hardened mechanical arm designed to resist wear and frictional fatigue from camshaft contact.
- Direct OEM Interchangeability: Built to original Landini, Massey Ferguson, and Perkins standards for immediate bolt-on installation.
- Reliable Fuel Prime & Air-Tight Sealing: Eliminates low-pressure circuit de-priming, preventing hard starting and line pressure drops.
Technical Specifications & OEM Cross References
| Component Product Name |
Mechanical Diaphragm Fuel Supply Pump / Fuel Lift Pump |
| Commercial Part Number |
3801812 |
| Original OEM Cross References |
2641311, 3637307M91, 4222111M91, 641A063, UPLK0006 |
| Engine Series Compatibility |
Perkins 3.152 (3-cylinder diesel) |
| Mounting Flange Configuration |
2 mounting bolt holes |
| Hole Spacing (Center-to-Center) |
45 mm |
| Lever Reach (Flange to Lever Tip) |
28 mm |
| Manufacturer Compatibility |
Landini, Massey Ferguson |
| Component Condition |
Brand new, heavy-duty OEM-equivalent replacement component |
Machinery Application & Vehicle Compatibility
| Manufacturer |
Series / Range |
Compatible Models (Perkins 3.152 Engine) |
| Landini |
30 / 40 / 60 / 70 Series |
5830, 5840, 5860, 5870 |
| Landini |
500 / 560 Series |
4500, 5500, 6060 |
| Landini |
Advantage / Blizzard Series |
Advantage 55, Blizzard 50, Blizzard 60 |
| Landini |
Crawler Series (Cingolati) |
Cingolati C 4500, Cingolati C 5500 |
| Landini |
Orchard Series (Frutteti) |
Frutteti 4530, Frutteti 4560, Frutteti 5530, Frutteti 5560 |
| Massey Ferguson |
100 / 104 Series |
133, 135, 148, 154 |
| Massey Ferguson |
200 Series |
230, 235, 240, 245, 254, 255 |
| Massey Ferguson |
500 Series |
550 |
Installation Guidelines and Workshop Notes: Prior to mounting, thoroughly clean the engine block mating surface on the Perkins engine and inspect the camshaft eccentric for irregular wear. Always install a new flange gasket to prevent engine oil leaks. Position the operating lever correctly underneath the camshaft lobe without forcing; if the lever encounters heavy spring tension upon approach, rotate the engine crankshaft by hand slightly to position the camshaft on its base circle. Torque mounting nuts evenly in alternating increments. Once fuel lines are connected, operate the manual priming lever to evacuate air from the low-pressure circuit and fill the fuel filter before starting the engine.
