Shop quality Marshall 804 crankshaft and oil delivery parts — including crankshafts, bearings, oil pumps, seals and related components to support engine lubrication and smooth internal operation.
The crankshaft and oil delivery system are at the heart of your Marshall 804 tractor’s engine performance — ensuring precise motion, balanced power delivery and effective lubrication throughout the Leyland 4/98 engine’s internal components. A well-maintained crankshaft and a reliable oil delivery system are essential to reduce wear, improve efficiency and prolong engine life, whether you’re servicing a workhorse tractor or restoring a classic machine.
This category brings together a comprehensive selection of crankshaft and oil supply components designed to match original Leyland 4/98 TT engine specifications, which is the engine that is fitted in the Marshall 804 tractor. Browse crankshafts, crank pins, main and big-end bearings, oil pumps, pick-up tubes, pressure relief valves, oil seals and gaskets — all manufactured to support robust performance and long service life. The crankshaft converts piston movement into rotational power, and the oil delivery system ensures a constant flow of clean lubricant reaches key areas such as bearings, journals and cam followers to minimise friction and overheating.
Over time, components such as bearings, oil seals and pumps can deteriorate due to heat, contamination or extended hours of operation, which can lead to reduced oil pressure, excess engine noise or premature wear. With the right replacement parts from this category, you can confidently rebuild, refresh or fully service the crankshaft assembly and oil delivery system — restoring optimum lubrication, efficiency and engine smoothness.
Whether you’re a workshop mechanic, farmer or tractor restoration enthusiast, our Marshall 804 crankshaft & oil delivery parts help you maintain the core systems that keep your engine running reliably. Explore the range to find the correct parts for efficient lubrication and dependable engine performance.
Secure Payment Options
