ZZ50223 cylinder block for Perkins 4.236 4.0L. Fits Massey Ferguson 165 and JCB 3C MkIII. Cast density tested. CNC deck. Contact us for wholesale pricing
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This ZZ50223 cylinder block assembly is a premium direct-fit core engineered for the naturally aspirated 4-cylinder Perkins 4.236 (4.0L) diesel engine. Manufactured from high-density grey cast iron with a standard cylinder bore 98.4mm (3.875 in), this heavy-duty block provides maximum resistance to thermal warpage.
Contact us for wholesale pricing.
Our premium aftermarket Perkins 4.236 cylinder block assembly delivers the structural rigidity and dimensional stability required by classic agricultural tractors and heavy industrial material handlers. Engineered in strict alignment with Perkins’ legendary off-highway standards—trusted worldwide as the heart of every great machine for agricultural tractor parts and industrial power applications—our assemblies restore original engine torque. Optimized for the 4.0L Perkins 4.236 natural aspiration engine, this block directly replaces the OEM Perkins engine block ZZ50223, 31358345, and U5MK0263 cross reference. Whether you are overhauling a Massey Ferguson MF 165/175 or MF 265/275 tractor (Massey Ferguson block), repairing a Manitou forklift block, or servicing a JCB 3C MkIII block backhoe loader, our block ensures factory alignment.
Over prolonged operational hours in demanding environments, agricultural engines regularly suffer from structural camshaft bush bore wear, cylinder deck warpage, and main bearing parent bore misalignment. This wear triggers high valvetrain play, oil pressure drops, piston blow-by, and severe head gasket blowout. To eliminate these common off-highway failures, our Perkins cylinder block wholesale selection features premium heavy-duty metallurgy. Cast with a high-nickel, chromium-alloyed grey iron matrix (Brinell hardness HB 187-241) and finished with dynamic line-bored precision, our blocks offer outstanding resistance to thermal fatigue and physical flexing, securing stable oil clearance over long multi-season operations.
| Parameter | Value |
|---|---|
| Engine Type | Perkins 4.236 natural aspiration (4-Cylinder diesel) |
| Cylinder Bore Diameter | cylinder bore 98.4mm (3.875 in) |
| Material Composition | High-strength alloy grey cast iron (HB 187-241) |
| Primary OEM Part Number | ZZ50223 |
| Cross References | U5MK0263 cross reference, 37114630 (Casting), 31358345 |
| Main Bearing Alignment | Line-bored precision CNC parent bore machining |
| Deck Surface Finish | CNC deck surfacing for premium Ra flatness |
| Quality Testing | 100% pressure leak and casting density testing |
Our manufacturing facilities support a complete range of low-wear Perkins engine blocks and cylinder liners. Browse our Perkins cylinder block range to find additional components, replacement main bearings, piston sets, and complete overhaul gasket sets for different tractor platforms [3].
| Engine Model | Primary Part Number | Cross Ref Part Numbers | Compatible Machine Model |
|---|---|---|---|
| AD3.152 | ZZ90082 | 31358345, U5MK0067 | Massey Ferguson MF240 |
| AD3.152 | ZZ90082 | 31358345 | Massey Ferguson MF135 |
| 4.236 | ZZ50223 | 31358345, 4236 | Massey Ferguson MF165 |
| 4.248 | ZZ50266 | U5MK0266, 4248 | Massey Ferguson MF290 |
| 1004-4 | ZZ50315 | U5MK0653, 1004 | JCB 3CX Backhoe |
| T3.1524 Turbo | ZZ90153 | T31524 | Massey Ferguson MF260 |
| 4.41 | ZZ51187 | 441 | Massey Ferguson MF390 |
This ZZ50223 Perkins 4.236 cylinder block is a direct-fit component calibrated for various high-torque agricultural tractors, materials handlers, and industrial power units:
| Make | Machine Model | Year Range | Engine Model | Application |
|---|---|---|---|---|
| Massey Ferguson | MF165, MF175, MF265, MF275 | 1968–1998 | Perkins 4.236 (MF 165 engine block) | Agricultural Tractor Operations |
| JCB | 3C MkIII Backhoe Loaders | 1977–1988 | Perkins 4.236 (JCB 3C MkIII block) | Heavy Civil Excavation & Material Loading |
| Manitou | Manireach rough-terrain Forklifts | 1982–2002 | Perkins 4.236 (Manitou forklift block) | Agricultural & Industrial Logistics Handling |
| Perkins | 4.236 Stationary Power Units | 1970–1995 | 4.236 natural aspiration engine | Stationary Pumping & Irrigation |
As a premier industrial diesel engine block manufacturer and direct alternative to a regional UK Perkins parts supplier, we provide micro-balanced block castings designed to maximize field uptime and tractor parts durability:
In classic Perkins 4.236 engines (like those powering the MF 165 engine block), continuous mechanical stress from the valvetrain can lead to camshaft bush bore wear on the cast iron parent bores. This wear increases clearances, causing severe oil pressure loss, valvetrain ticking, and erratic valve timing. To prevent this, our aftermarket blocks utilize a premium alloyed grey cast iron with reinforced support webs around the camshaft journals. This enhanced material structure distributes valvetrain stresses evenly, preventing premature parent bore wear and securing long-term timing stability.
Internal casting flaws, such as microscopic porosity or sand holes in the jacket walls, can cause catastrophic engine failure. Under heavy loads, these tiny voids can rupture, allowing engine oil and coolant to mix, which ruins bearing lubrication. To guarantee structural integrity, our cylinder blocks undergo 100% casting density testing. We pressurize every block with air up to 40 PSI while submerged in water. This rigorous inspection ensures a completely leak-proof block, protecting your agricultural investment during continuous harvest operations.
The key difference lies in the cylinder bore 98.4mm (3.875 in) of the Perkins 4.236 natural aspiration engine (OEM ZZ50223, U5MK0263 cross reference) compared to the larger 101.054mm (3.979 in) bore of the Perkins 4.248. While both 4-cylinder engines share identical exterior mounting configurations and casting numbers (like 37114630), their displacement and piston sizes are different. Rebuilders must check their specific engine serial number prefix to prevent incorrect bore and piston ring matching.
Block deck flatness must be verified using a straightedge and feeler gauges; resurface the deck if warpage exceeds 0.05 mm to prevent head gasket blowout. CNC deck surfacing ensures a perfect gasket seal. Main bearing saddles must be torqued with caps in place and line bored if out-of-round to ensure crankshaft concentricity (line-bored precision).
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