Cylinder Head & Gasket Kit Replacement for Bobcat MT55 MT85 Series-Specific

Verified Cross-Reference — Cylinder head flatness checked within 0.05mm against Kubota D902 and D902-E3B-BC-1 serial ranges before dispatch.

Technical Specifications

Application Suitability

Why the Same Part Number Ships in Multiple Variants

The base casting may look identical, but gasket kit contents shift across Kubota D902 engine serial ranges.

In the Guangzhou and Foshan warehouse districts, I have handled too many returns where a Cylinder Head and Gasket Kit for Bobcat MT55 MT85 / Kubota D902 fitment arrived, bolted down, but failed to seal. The issue is rarely the head itself. It is the gasket set variant. Kubota produced the D902 across multiple emission tiers and application codes, and each build uses a slightly different head gasket thickness or coolant passage layout. Ordering by machine model alone leaves a gap that only the engine serial number closes. [NEED_CITE: Kubota D902 engine serial range identification for aftermarket parts]

When a Bobcat MT85 comes in for head work, the nameplate on the loader frame tells you the machine model but not which D902 variant sits inside. The difference between a standard D902 and a D902-E3B-BC-1 can mean the difference between a gasket that seals and one that leaks coolant into the combustion chamber within the first fifty hours. This is why cross-reference verification across 7247453, 7000463, 7247479, 7000464, and 7247480 matters before any purchase commitment.

Engine Serial Range and Gasket Variant Matching

The Cylinder Head and Gasket Kit for Bobcat MT55 MT85 / Kubota D902 fitment covers two primary engine builds. The standard D902 and the D902-E3B-BC-1 differ in combustion chamber geometry and coolant routing. The gasket kit included with this assembly matches the specific variant identified by your engine serial number, not just the base D902 designation. Providing the serial number allows the correct gasket thickness and port alignment to ship with the head.

Cross-Reference Path Across Superseded Numbers

The five reference numbers associated with this cylinder head assembly — 7247453, 7000463, 7247479, 7000464, and 7247480 — represent production revisions and kit configurations across Kubota and Bobcat service channels. A worn nameplate or a faded service tag often shows only one of these numbers. Cross-reference verification maps your existing number to the current available kit, confirming whether the superseded number still corresponds to the same gasket variant and head casting. [NEED_CITE: aftermarket cross-reference verification standards for small diesel engines]

Dimensional Verification at Mounting Points

Installation requires no modification when the correct variant is supplied. The cylinder head mounting bolt pattern, valve cover bolt holes, and injector seat positions match the original casting dimensions for the identified engine serial range. The head is pressure tested at 8 bar for 30 minutes and flatness is held within 0.05mm, so the mating surface contacts the block evenly under torque sequence without localized gasket stress.

The Cost of Shipping the Wrong Variant

A cylinder head that bolts on but carries the wrong gasket variant creates a specific kind of failure. The head torques down correctly, the machine starts, and the operator puts it back to work. Coolant seepage or compression loss appears gradually, often mistaken for a thermostat or injector issue until the head is pulled again. The second teardown doubles labor cost and adds unplanned downtime that no parts savings can offset. [NEED_CITE: cylinder head gasket failure modes in compact diesel engines]

What Makes This Sourcing Different

Production and sourced supply lines carry the same quality control and warranty terms under a single account, so a cylinder head and its associated gasket kit ship with one set of documentation and one warranty period. The eight product categories mean that if the repair list also includes fuel system components, undercarriage parts, or seal kits for the same machine, everything consolidates into one consignment. Minimum order is one piece, so a single emergency replacement ships without padding the order. The Guangzhou warehouse holds stock on common engine components for fast dispatch on standard variants. Part identification works from a part number, machine model, photograph of the old component, or a nameplate image. Cross-reference verification covers superseded and alternate numbers across the five reference points listed above. Sample supply is available for physical fitment confirmation before committing to fleet-level quantities.

Documentation & Verification

• Commercial invoice listing part number 7247453 and matched gasket kit variant
• Cross-reference sheet mapping your existing number to the supplied kit (reference only)
• Dimensional check record confirming flatness within 0.05mm and pressure test results
• Warranty terms covering 3-12 months against manufacturing defects
• Packing photographs showing head and gasket kit before crate closure
• HS code and customs documentation for international engine parts shipment

Fitment Check Before Installation

• Compare bolt hole depth on the new head against the pulled unit before torquing
• Verify injector seat angle and port alignment match the engine block casting
• Check gasket kit contents against the D902 variant-specific service manual illustration
• Confirm valve cover bolt hole spacing matches the existing cover casting
• Dry-fit the head without gasket to check mounting surface contact before final assembly
• Report any dimensional discrepancy before breaking the gasket kit seal

How to Confirm the Right Kit Ships

Provide the machine model, engine serial number, and a photograph of the existing cylinder head casting number if visible. If the nameplate is unreadable, a photo of the engine block serial stamp or the machine data plate is sufficient for variant identification. The technical team cross-references your number against the five reference points and confirms which gasket kit variant matches your specific D902 build before any order is placed.

Frequently Asked Questions

Q: How do I confirm this cylinder head fits my Bobcat MT55 or MT85 when the nameplate is unreadable? A: A photograph of the engine block serial stamp, the machine data plate, or the existing head casting number is sufficient. The technical team uses these images to cross-reference against the D902 variant database and confirm which gasket kit matches your specific engine build. No guesswork required.

Q: My old part number doesn't match 7247453 exactly — is it still the right replacement? A: The five reference numbers — 7247453, 7000463, 7247479, 7000464, and 7247480 — cover production revisions across Kubota and Bobcat service channels. Provide your existing number for cross-reference verification. The supplied kit is confirmed against your engine serial, not just the base part number.

Q: Why are there multiple gasket kit numbers for the same cylinder head? A: Kubota produced the D902 across multiple emission tiers and application codes. Each variant uses a different gasket thickness or coolant passage layout. The correct kit depends on the engine serial number, which identifies the specific build configuration. The gasket kit shipped matches that configuration.

Q: I only have the machine model, not the engine serial — can you still identify the correct kit? A: Machine model narrows the range but does not eliminate variant differences. A photo of the engine block stamp or machine data plate usually provides enough information. If the engine has been replaced or rebuilt, the current serial number is essential for accurate kit matching.

Q: Can I get a sample to test fitment before ordering for my whole fleet? A: Sample supply is available for physical fitment confirmation on one machine before committing to fleet-level quantities. The sample ships with the same gasket kit variant identified for your engine serial, so the fitment check reflects exactly what the bulk order will contain.