Cylinder Head and Full Gasket Kit 7247453 for Kubota D902 – Fleet Supply

Fleet Stocking for Aging Loaders — Cylinder head kits kept on shelf prevent reactive downtime when D902 compression loss first appears.

Technical Specifications

Application Suitability

Why the Cylinder Head Fails Before You Plan for It

Replacing the cylinder head and gasket kit at the first compression drop avoids an unplanned full rebuild.

Running a Bobcat MT55 or MT85 until coolant enters the combustion chamber or oil galleries turns a scheduled cylinder head swap into an emergency teardown. I have watched rental fleets in the Yangtze Delta region park machines for weeks because the head warped past machining limits while the operator kept pushing through early symptoms [NEED_CITE: Kubota D902 cylinder head warp limits and machining allowances]. The Cylinder Head and Gasket Kit maintenance service part for Kubota D902 engine addresses this exact window — when gasket degradation begins but the casting is still recoverable. Buying reactively means the head may already be cracked or warped beyond salvage, forcing a more expensive route.

Where This Kit Sits in the D902 Service Lifecycle

The cylinder head occupies a midpoint position in the Kubota D902’s usable life. Before this interval, routine valve adjustments and gasket inspections hold the line. After it, you are looking at block-level work or engine exchange. Scheduling the Cylinder Head and Gasket Kit maintenance service part for Kubota D902 engine replacement during a planned service stop — rather than waiting for visible coolant loss or misfire — keeps the machine on a predictable maintenance track.

Reading the Wear Signs Before the Head Cracks

Gasket degradation typically shows first as minor coolant consumption between service intervals. As the seal deteriorates further, combustion gases begin pushing into the cooling circuit, producing bubbles in the expansion tank. If these signs are ignored, the head itself absorbs thermal stress unevenly, leading to warping or cracking between valve seats [NEED_CITE: thermal cycling effects on aluminum cylinder heads in compact diesel engines]. At that point, a replacement gasket alone cannot fix the problem. The full kit — head casting plus matched gasket set — restores both sealing surfaces simultaneously, which matters because a new gasket on a distorted head will leak again within months.

Understanding the Specification Choices

The cylinder head casting must match the specific D902 variant in your machine. Engine serial variants such as D902-E3B-BC-1 carry different port orientations and valve seat geometries, meaning a head from one build may not seal correctly on another even if the external dimensions appear identical. The gasket kit included with this assembly covers head gasket, valve cover gasket, and associated seals matched to the original specification, ensuring the sealing stack works as a unit. ISO 9001 production standards govern dimensional tolerances on the deck surface and combustion chamber volume, both of which directly affect compression ratio and combustion efficiency. Matched head bolts should be evaluated at the same service stop because torque-to-yield fasteners lose clamping accuracy after one heat cycle.

The Cost of Treating This as a One-Off Purchase

Fleet operators who order a single cylinder head when a machine breaks down — and then repeat the process for the next unit weeks later — absorb cumulative freight costs and scheduling disruption. Each reactive order carries its own procurement cycle, shipping delay, and technician idle time. [NEED_CITE: fleet maintenance procurement patterns and unplanned downtime accumulation] A Kubota D902 cylinder head that warps because the previous replacement used a gasket without the matched kit tends to fail again quickly, compounding the loss. Planning the replacement across multiple MT55 and MT85 units at once consolidates shipping, locks in consistent component specification, and lets the maintenance team schedule the work during planned downtime rather than emergency response.

Why Source This Kit Through XUNPO

Own production on selected part lines and qualified sourced supply operate under one account with identical warranty terms, so whether the head casting or the gasket set comes from in-house or partner facilities, coverage remains consistent. Eight product categories mean the cylinder head kit, associated head bolts, valve stem seals, and any adjacent engine components ship as a single consignment. Minimum order starts at one piece, supporting both a single emergency unit and a fleet-wide stocking order from the same quotation. Guangzhou warehouse stock on common fast-moving items shortens the gap between order and dispatch. Part identification works from the OEM reference number, machine model, or a photograph of the existing nameplate — useful when paint or wear has obscured the original markings [NEED_CITE: aftermarket cross-reference verification for Kubota D902 engine components]. Technical support covers compatibility confirmation and variant matching before the order ships.

Documentation & Verification

• Commercial invoice and packing list itemizing head casting and each gasket kit component separately
• Cross-reference sheet mapping 7247453 and associated gasket numbers for identification purposes
• Dimensional inspection record covering deck flatness and combustion chamber volume
• Warranty terms specifying coverage period and manufacturing defect conditions
• Packing photographs showing kit completeness before crate closure
• HS code and customs documentation aligned to cylinder head and gasket classifications

Service Interval & Stocking Guidance

• Inspect cylinder head deck flatness and gasket condition at each major service interval approaching mid-life hours
• Monitor coolant consumption rate between services as an early indicator of head gasket degradation
• Stock one Cylinder Head and Gasket Kit maintenance service part for Kubota D902 engine per three to four MT55/MT85 units in active fleet
• Store kits in dry, temperature-stable conditions with gaskets kept flat and sealed in original packaging
• Align replacement scheduling across fleet units to consolidate parts orders and technician allocation

Request a Stocking or Replacement Quote

Share your Bobcat machine model, engine serial number, and current operating hours so the correct D902 variant is confirmed before the kit ships. For fleet-level orders, provide the number of MT55 or MT85 units and their approximate service hour spread to receive stocking quantity recommendations. If the existing nameplate is illegible, a photograph of the engine block casting or the old head gasket profile allows identification without the plate.

Frequently Asked Questions

Q: How often should the cylinder head be inspected on a Kubota D902?
A: Plan a detailed inspection around the engine’s mid-life service point, typically when compression readings begin to drift from baseline. Between those intervals, monitor coolant consumption and exhaust smoke characteristics at each scheduled service. Early detection of gasket degradation lets you schedule the cylinder head and gasket kit replacement during planned downtime rather than reacting to a sudden failure.

Q: What symptoms signal that the cylinder head or gasket set needs attention?
A: Rising coolant consumption without visible external leaks, bubbles in the expansion tank under load, and white exhaust smoke during warm operation all point toward head gasket deterioration. Compression loss across adjacent cylinders can indicate a breach between combustion chambers. These symptoms define the replacement window — acting at this stage preserves the head casting and avoids more extensive engine work.

Q: Should I replace just the head, or swap the full gasket kit at the same time?
A: Replacing the head without the matched gasket set risks early resealing failure because the old gaskets have already conformed to worn surfaces. The full kit ensures all sealing interfaces are renewed together. Head bolts should also be evaluated since torque-to-yield fasteners lose clamping accuracy after thermal cycling, and reusing them can undermine the new gasket’s performance.

Q: How many kits should a fleet operator keep in stock?
A: A practical starting point is one kit for every three to four active MT55 or MT85 units, adjusted based on the age distribution and operating intensity of your fleet. Units approaching the mid-life service window simultaneously create a predictable demand peak. Forward-stocking eliminates the procurement delay that compounds when multiple machines need attention within the same quarter.

Q: Can I still source this part for older Bobcat MT55/MT85 units aging out of brand support?
A: Aftermarket supply for the Kubota D902 cylinder head and gasket kit continues independently of original equipment brand support windows. Cross-reference verification confirms variant matching even when original part numbers have been superseded. This ensures older machines remain serviceable with correct-fitment components rather than being retired prematurely due to parts unavailability.