Engine serial variants confirmed — Cylinder Head 6655153 7327327 (cross-reference only) supplied alongside matched overhaul gasket kits and valve train components to eliminate top-end rebuild mismatches.
Technical Specifications
| Parameter |
Value |
| Part Number |
6655153, 7327327 |
| Product Type |
Cylinder Head |
| Cross-Reference |
6655153, 7327327 (reference only) |
| Machine Fitment |
Bobcat B300, BL370, 331, 334, 337, 341, 753, 763, 773, 7753, S150, S160, S175, S185, 5600 |
| Engine Compatibility |
Kubota V2203, V2203T, V2203E, V2203B |
| Material |
High-strength gray iron (ASTM A48 Class 30) |
| Surface Finish (Deck) |
Ra 1.6 μm |
| Machining Tolerance |
±0.05 mm |
| Condition |
New Aftermarket |
| Warranty |
3–12 months against manufacturing defects |
| MOQ |
1 piece |
Application Suitability
| Engine System |
Related Components |
| Combustion Chamber & Sealing |
Head gasket, valve cover gasket, intake and exhaust manifold gaskets |
| Valve Train Assembly |
Valve stem seals, valve guides, valve seats, rocker arm components |
| Fastener & Torque Management |
Cylinder head bolts (recommended replacement at every teardown) |
| Cooling System Interface |
Thermostat housing gasket, coolant passage seals, injector cup seals |
Overhaul Gasket Kits and the Cost of an Incomplete Rebuild
A cylinder head installed without its matched gasket set and replacement fasteners is a rebuild waiting to fail again.
When a Kubota V2203 comes in for a top-end job, the cylinder head is the most visible component, but it is only one line on a much longer list. The valve stem seals, the head gasket, the injector cups, and the head bolts all have finite service lives. Skipping any of them to save on the initial order means opening the engine again within a season [NEED_CITE: engine overhaul sequencing and component replacement intervals for compact diesel engines]. Shops that quote a Cylinder Head for Kubota V2203 engine rebuild without verifying the full scope of the job end up absorbing the cost of the second teardown themselves.
Where the Cylinder Head Sits in the V2203 Top-End Rebuild
The cylinder head is the closure plate for the combustion system. It interfaces with the block through the head gasket, with the valve train through guides and seats, and with the fuel system through injector cups. When a Cylinder Head for Kubota V2203 engine rebuild is being sourced, every one of those mating surfaces must be accounted for. A new head bolted down over old valve stem seals or a reused head gasket is a compression problem waiting to surface.
Matching the Head Gasket to Block Deck Condition
Previous resurfacing of the block deck changes the required head gasket thickness. If the block has been machined flat during a prior rebuild, a standard-thickness gasket may not compensate for the lost material, leading to insufficient clamping force and combustion gas leakage past the fire ring [NEED_CITE: cylinder head gasket thickness selection after block resurfacing]. Confirm the deck condition before ordering the overhaul kit to go with this cylinder head.
Reading the Specification Sheet for a Rebuild Context
The ASTM A48 Class 30 gray iron specification indicates a tensile strength suited to the combustion pressures and thermal cycling of the V2203 family. The Ra 1.6 μm deck surface finish is the level required for proper head gasket sealing without relying on excessive torque to close surface voids. The ±0.05 mm machining tolerance across the deck plane keeps clamp load distribution even across all four cylinders, which matters when the head bolts are torqued to sequence.
The Rebuild That Comes Apart Because Nobody Checked the Previous One
Engines on their second or third overhaul rarely have standard-size valve guides and seats. A shop ordering a new cylinder head without checking whether the previous rebuild went to oversize components will receive a head with standard bores that do not accept the oversize guides already in service on the block side — or vice versa. The head sits on the bench, the machine sits in the bay, and an emergency order goes out at premium freight [NEED_CITE: oversize valve component identification during engine overhaul].
Why This Cylinder Head Ships From One Account With the Full Rebuild List
Production on selected lines and qualified sourcing on the remainder means the cylinder head, the gasket kit, the valve stem seals, and the head bolts all carry the same warranty terms under one account. Eight product categories mean the full top-end list consolidates into one dispatch. Part identification works from the engine serial plate photograph when the stamping on the block is painted over or worn. Cross-reference verification covers superseded numbers across V2203 variants. A sample can ship ahead of a bulk commitment so the shop can confirm port layout and bolt pattern against the block on the bench.
Documentation & Verification
- Commercial invoice listing cylinder head, gasket kit, and fasteners under one reference
- Part compatibility sheet noting V2203 variant and cross-reference numbers as reference only
- Pressure test and deck surface finish inspection record included with shipment
- Warranty terms covering manufacturing defects across all supplied components
- Packing photographs showing cylinder head protection and consolidated box contents
- HS code and customs documentation prepared for international engine parts shipment
Installation & Rebuild Sequence
- Verify deck surface finish on both block and new cylinder head before gasket placement
- Confirm valve guide and seat sizes match the overhaul grade before pressing components into the head
- Install new head bolts and torque to the V2203 multi-step sequence specification
- Check valve lash after initial run-in and again after the first thermal cycle
- Monitor coolant system for leaks at the head gasket joint during the break-in period
Tell Us What the Engine Tag Says
Send the engine serial plate photograph and note whether the block has been resurfaced or whether oversize valve components were installed in a previous rebuild. That information determines the correct gasket thickness and guide sizes to ship with the cylinder head.
Frequently Asked Questions
Q: What else should be replaced when installing a new cylinder head on a V2203?
A: Head bolts should be replaced at every teardown because they stretch past their elastic limit during torque. The head gasket, valve stem seals, and injector cup seals are single-use items. If the valve guides show measurable wear, they should be addressed while the head is already on the bench rather than waiting for the next failure.
Q: How do I confirm which V2203 variant my engine is?
A: The engine serial plate identifies the exact variant — V2203, V2203T, V2203E, or V2203B. These share the same base architecture but may differ in valve sizing, port configuration, and injector placement. A photograph of the plate is sufficient for us to verify compatibility before shipping.
Q: Does the overhaul gasket kit include every seal needed for a top-end rebuild?
A: Standard kits cover the head gasket, valve cover gasket, and manifold gaskets. Injector cup seals and thermostat housing gaskets may need to be added depending on the engine build configuration. Specify the engine serial when ordering so the kit contents can be matched to the specific variant.
Q: What caused my previous cylinder head to fail, and how do I prevent it?
A: Warped or cracked heads in the V2203 family typically trace back to cooling system issues — blocked passages, a failed thermostat, or degraded coolant that no longer transfers heat effectively. Replacing the head without addressing the cooling system fault leads to the same failure repeating within a short operating window.
Q: Can I get a sample to verify fitment before ordering for the whole fleet?
A: Yes. A single cylinder head can ship as a sample so your shop can place it on the block, confirm port layout, bolt pattern alignment, and injector cup positioning before committing to a larger quantity for fleet-wide overhaul inventory.
