V2203 Cylinder Head 6686996 7327333 for Kubota – Verified Fitment

Cross-Reference Verified — Both 6686996 and 7327333 reconciled under one cylinder head casting, fitment boundary confirmed for Bobcat skid steer and excavator models running Kubota V2203 variants.

Technical Specifications

Application Suitability

Why the Same Reference Number Ships on Multiple Bobcat Generations

The V2203 Cylinder Head for Bobcat 753 and later S-series loaders shares a base casting, but variant differences in valve cover bolt patterns and sensor port positions separate early and late production machines.

Buyers holding a worn 6686996 stamp on a pulled head often find catalog tables listing only that number, while newer service bulletins point to 7327333 as the superseded replacement. Cross-reference tables copied between sellers frequently carry errors forward without noting which Bobcat serial ranges the swap actually covers. I have seen S160 units arrive at a workshop with a head that matched the old number perfectly — except the valve cover bolt holes sat several millimeters off, forcing a second teardown. [NEED_CITE: aftermarket cylinder head interchange verification practices]

Serial Range and Engine Variant Coverage

This V2203 cylinder head fits both the base V2203 and the V2203 2EB Tier II engine variants found across the Bobcat excavator and skid steer range. The boundary between early 753 loaders and later S175 machines is not a clean cut — some transition-year units carry engines from the outgoing build specification. Confirming the engine serial, not just the machine model, locks the correct variant before the head ships.

Cross-Reference Reconciliation Between 6686996 and 7327333

Both numbers appear in different editions of Bobcat and Kubota parts catalogs, creating confusion when a buyer cross-checks a single source. The 6686996 and 7327333 references (for identification purposes) map to the same base head casting with identical port geometry and deck layout for the V2203 platform. When an older catalog lists one number and a newer bulletin lists the other, the physical head remains interchangeable across the covered machine models. Requesting a cross-reference sheet with both numbers reconciled removes this ambiguity before commitment.

Injector, Glow Plug, and Sensor Port Verification

The CNC-machined deck on this cylinder head replicates the Bobcat-specific port layout — injector angle, glow plug position, and sensor mounting holes all match the V2203 Tier II combustion chamber profile. Before installation, I always recommend comparing the port pattern on the new head against a photograph of the pulled unit, especially on machines that may have undergone a prior engine swap. A mismatched sensor hole position is not visible until the wiring harness reaches it. [NEED_CITE: cylinder head port pattern verification for engine swap machines]

Deck Flatness and Surface Finish in Context

The Ra 0.8 μm deck surface finish and 0.05 mm flatness tolerance ensure the head gasket seals uniformly under the V2203 combustion pressure cycle. High-silicon aluminum alloy provides thermal stability through repeated heat-soak cycles typical of high-duty skid steer operation. The 8 bar pressure test confirms integrity of the water jacket and combustion chamber passages before the head leaves inspection. Sintered bronze valve guides at 0.025 mm clearance hold valve stem alignment within the geometry the V2203 cam profile expects.

What a Misidentified Head Actually Costs

Ordering a cylinder head by number alone, without confirming the engine variant and bolt pattern, leads to one of two outcomes: the head physically bolts on but a sensor or glow plug port is blocked, or it does not seat against the block at all. Either way the machine stays down, the head ships back, and a replacement order resets the clock. On a Bobcat 334 excavator working a demolition site, that second teardown is not just parts cost — it is crew idle time and missed contract milestones. [NEED_CITE: cost impact of misidentified replacement parts on construction schedules]

Why Buyers Source This Cylinder Head Here

Production on selected lines and qualified sourced supply sit under one account and one warranty, so a V2203 head and its companion gasket set ship from the same responsibility chain. Eight categories of engine, hydraulic, and undercarriage parts mean a full Bobcat 753 top-end overhaul consolidates into a single consignment rather than staggered deliveries from separate vendors. Minimum order starts at one piece for emergency replacements, while sample units are available for physical fit-check before a fleet commits to bulk. Part identification works from a number, a machine model, or a photograph of a worn nameplate — and cross-reference verification covers both superseded and alternate numbers to catch catalog errors before they reach the workshop floor. A technical team is available to confirm compatibility and variant matching when the engine serial does not line up with standard tables.

Documentation & Verification

• Commercial invoice and packing list referencing both 6686996 and 7327333 for customs clarity
• Part compatibility and cross-reference sheet covering Bobcat 331 through S185 machine ranges
• Dimensional inspection record on deck flatness and port spacing before dispatch
• Six-month warranty terms covering manufacturing defects on the complete head assembly
• Packing photographs showing valve train protection and deck surface cover
• HS code and customs documentation support for international shipments

Fitment Check Before Installation

• Compare injector and glow plug port positions against the pulled head before torquing
• Verify valve cover bolt hole pattern matches the specific Bobcat machine generation
• Check deck surface for any transit damage on the Ra 0.8 μm finish
• Confirm valve guide clearance with a dial indicator if the engine block has been previously machined
• Match head bolt length and thread engagement against the block — some early 753 blocks use shorter bolts
• If ports do not align, do not force installation — photograph and return for cross-reference re-check

Requesting a Fitment Confirmation

Provide the Bobcat machine model, the engine serial from the block stamping, and a photograph of the existing head's casting mark or nameplate. If the number is worn beyond reading, a clear image of the port layout and bolt pattern is enough to run the cross-reference against both 6686996 and 7327333 and confirm which variant fits before the order is placed.

Frequently Asked Questions

Q: How do I confirm 6686996 and 7327333 are interchangeable for my specific Bobcat model? A: Supply the machine model and engine serial number. We cross-check both references against the V2203 variant your machine carries and verify bolt pattern, port layout, and sensor positions match. A cross-reference sheet documenting the reconciliation ships with the order so your workshop has it on file.

Q: My old head has no readable number — can you match by machine model alone? A: Machine model narrows the field but does not always confirm the engine variant, especially on transition-year Bobcat loaders. A photograph of the valve cover bolt pattern and the injector port layout usually provides enough detail to lock the correct casting without a legible stamp.

Q: Why do some catalogs list only one of the two reference numbers? A: Different catalog editions were published at different points in the supersession timeline. Some reference only the original number, others only the replacement. We reconcile both 6686996 and 7327333 against current fitment data so neither number causes a false rejection during your parts lookup.

Q: Will this head fit both the early 753 and the later S175 without modification? A: The base casting fits both platforms, but the valve cover bolt hole layout can differ between early 753 units and later S-series loaders. Confirming your engine serial and generation ensures the head you receive matches your specific cover pattern without requiring drilling or adaptation.

Q: Can I get a sample to test-fit before ordering for my fleet? A: Sample units are available for physical fitment checks. Bolt the sample head to one machine, verify port alignment and cover fitment, then confirm or adjust the bulk order based on what you see on the block rather than catalog assumptions.