Genuine Landini ARGO 4-Hole Mechanical Fuel Supply Pump - Code 6680338A1

The genuine Landini - ARGO Tractors 4-hole mechanical diaphragm fuel feed supply pump (part number 6680338A1) is an original equipment manufacturer (OEM) component designed to ensure steady diesel fuel transfer from the tank to the filtering and injection system on Perkins 903.27 and Perkins 3.152/1000 series engines. Engineered with a heavy-duty 4-bolt mounting flange (vertical pitch 25 mm, horizontal pitch 45 mm) and a drive lever reach of 27 mm from flange face to tip, it guarantees exact camshaft engagement and long-term operating stability. Fully interchangeable with alternative original OEM references 296265A1, 1300080739, 4222090M91, 3637292M91, ULPK0004, and 2641712 (and aftermarket pump 3801987), it is widely fitted to wheeled, orchard, vineyard, and crawler tractors across Case IH and Landini ranges.

Key Features and Construction Advantages

• Genuine ARGO Tractors / Landini Original Component: Factory-original specification providing peak reliability and exact OE fitment tolerances.
• Heavy-Duty 4-Bolt Flange (25 x 45 mm): Ensures uniform clamping pressure across the engine block mating surface, preventing oil seepage and flange warping.
• Calibrated 27 mm Drive Lever: Precision-hardened mechanical arm engineered to track the camshaft eccentric with minimal friction and wear.
• Chemical-Resistant Reinforced Diaphragm: High-grade elastomeric core formulated to withstand engine thermal cycles and modern agricultural diesel or biodiesel fuels.
• Dependable Fuel Priming: Prevents low-pressure system pressure drops and fuel line cavitation, ensuring quick cold-morning starts.

Technical Specifications & OEM Cross References

Machinery Application & Vehicle Compatibility

Manufacturer	Series / Range	Compatible Models
Case IH	Compact & CX Series	Compact: C 50, C 60; CX: CX 50, CX 60
Case IH	CS Series	CS 48 (2/97-1/01), CS 52 (1/01-3/04), CS 58 (2/97-1/01), CS 63 (1/01-3/04)
Landini	30 / 40 / 50 Series	30: 5830, 6030, 6830, 7830, 8830; 40: 5840, 6040, 6840; 50: 6550, 7550, 8550
Landini	60 / 70 / 80 Series	60: 5860, 6860, 7860, 8860, 9060; 70: 5870, 6070, 6870, 7870, 8870; 80: 7880, 9080
Landini	500 / 560 Series	500: 5500, 6500, 7500, 7505, 8500; 560: 6060
Landini	Advantage & Blizzard Series	Advantage: 60, 65, 75, 85, L95; Blizzard: 60, 65, 75, 85, 95
Landini	Crawler & CF Series (Cingolati)	C: C 4830, C 5830, C 6500, C 6830, C 7800, C 7830, C 8860; CF: CF 4830, CF 5030, CF 5830, CF 6030, CF 6060, CF 6830
Landini	Orchard Series (Frutteti)	4530, 5530, 5560, 6030, 6060, 6530, 6560, 7530, 7560, 8530, 8560
Landini	Globus, Mythos & Vision Series	Globus 55; Mythos 115; Vision 80, Vision 100
Landini	Landpower & Legend Series	Landpower: 125, 130, 135, 145, 160, 185; Legend: 105, 115, 125, 130, 135, 145, 160, 165, 185
Landini	Rex, Rex Cab & Foot Step Series	Rex: 60, 65, 75; Rex Cab: 60; Rex Foot Step: 60, 65
Landini	Trekker & Trekker C Series	Trekker 60; Trekker C 75, Trekker C 85, Trekker C 95
Landini	Vigneti & Vigneti Rex Cab Series	Vigneti Cab: 60, 65, 75; Vigneti Foot Step: 60, 65, 75; Vigneti Rex Cab: 60, 65

Installation Guidelines and Workshop Notes: Prior to mounting, inspect the camshaft drive lobe for scoring or excessive wear and thoroughly clean the mating face on the Perkins block. Always fit a new 4-hole mounting gasket to prevent engine oil leaks. Slide the operating lever smoothly underneath the camshaft eccentric; if noticeable spring resistance is met upon approach, turn the crankshaft by hand until the camshaft sits on its lowest lift circle. Fasten all four bolts gradually in a crosswise pattern to ensure flat, even gasket compression. Bleed trapped air from the low-pressure fuel circuit before cranking the engine.