Cross-Reference Cylinder Head – Fits Kubota V1505 KX71-3

Cross-Reference Verified — Every V1505 cylinder head reference from 1G092-03044 through 14 alternate and superseded numbers is checked against your machine serial before dispatch.

Technical Specifications

Application Suitability

Why the Same Part Number Ships in Multiple Variants Across the V1505 Family

A cylinder head for Kubota V1505 KX71-3 may share a base casting number with heads for B3000 tractors or F3680 mowers, yet differ in combustion chamber volume, port orientation, or valve train geometry.

The V1505 engine platform spans several generations and dozens of machine applications. Part numbers were superseded multiple times as Kubota revised combustion chamber profiles and emission configurations across E2B, E3B, and E4B tiers. I have seen repair shops receive a cylinder head that bolts on perfectly but produces abnormal compression ratios because the combustion chamber was machined for a different variant within the same engine family [NEED_CITE: engine cylinder head variant identification by serial range]. A cross-reference cylinder head must be validated against the specific engine serial, not just the base engine designation, to avoid this trap.

Mapping Machine Models to the Correct V1505 Cylinder Head

This cylinder head for Kubota V1505 KX71-3 covers the compact excavator range alongside agricultural tractors from B3000 through B7820, professional mowers F3680 and F3690-AU, and industrial V1505 power units. Each machine line may carry a different superseded part number on its nameplate. The 14 cross-reference numbers listed above represent the known interchange chain for this casting, and every order is verified against the buyer's machine model or engine serial before release.

Interface and Dimensional Checks Before Fitment

Port position, bolt pattern, and valve layout must match the existing manifold and camshaft configuration. The V1505 turbo variants position intake and exhaust ports differently from naturally aspirated versions. Pre-assembled heads ship with valves, springs, and guides installed to factory clearances, so dimensional verification focuses on external mating surfaces: head bolt spacing, coolant passage alignment, and injector or glow plug bore orientation. Buyers holding a worn or partially legible part number can request dimensional photographs for side-by-side comparison with the old casting [NEED_CITE: cylinder head mating surface dimensional verification standards].

Decoding the Specifications That Matter for Fitment

The high-grade cast iron alloy provides the thermal stability required for the V1505 combustion environment, where sustained operating temperatures demand consistent expansion coefficients across the head and block interface. Pre-assembled valve train eliminates the need for valve seat cutting or guide installation at the repair site, which is significant because improper valve seat angles cause sealing failures that mimic head gasket problems. The 3-12 month warranty window reflects confidence in casting integrity and valve train assembly tolerances, giving buyers operating in demanding construction and agricultural conditions a meaningful coverage period. ISO 9001 manufacturing oversight ensures that bore alignments and deck flatness fall within accepted tolerances for this engine family.

The Hidden Cost of Installing a Variant-Mismatched Head

A cylinder head that physically bolts on but carries the wrong combustion chamber volume produces compression readings outside specification, leading to hard starting, excessive fuel consumption, or accelerated piston wear. In fleet operations, this failure mode often goes undiagnosed for weeks because the symptoms overlap with injector or fuel system issues [NEED_CITE: compression ratio deviation symptoms in diesel engines]. Shops that skip the serial-level verification step before installation absorb the cost of a second teardown, a replacement head, and machine downtime that extends well beyond the original repair window.

What Makes This Supply Route Reliable for Fitment Verification

Own production lines and qualified sourced supply operate under one account and one warranty, so accountability does not shift between suppliers when a variant question arises. Eight product categories mean a complete top-end overhaul — head, gasket set, head bolts, valve cover gasket — ships as one consignment with matched lead times. Orders start from one piece, allowing a sample cylinder head for Kubota V1505 KX71-3 to be ordered for physical fitment confirmation before a fleet-scale commitment. The technical team verifies cross-reference numbers including superseded and discontinued references, and can identify the correct head from a machine model alone when the nameplate is missing or unreadable. Guangzhou warehouse stock enables fast dispatch on commonly requested V1505 variants.

Documentation & Verification

• Commercial invoice listing all cross-reference numbers checked against your engine serial
• Part compatibility sheet showing which V1505 variants this head fits and which it does not
• Dimensional inspection record covering deck flatness, port spacing, and valve seat angles
• Warranty terms specifying coverage scope and claim procedure for manufacturing defects
• Packing photographs documenting the head condition and protective packaging at dispatch
• HS code and customs classification support for international shipment clearance

Fitment Check Before Installation

• Compare head bolt hole spacing on the new cylinder head against the block pattern before lifting into position
• Verify intake and exhaust port orientation matches the existing manifold gasket footprint
• Confirm injector or glow plug bore alignment with the fuel system layout on your specific V1505 variant
• Check valve clearance against specification after torquing the head but before installing the valve cover
• Inspect the head gasket seating surface for any transit damage that could compromise the seal
• If dimensions do not match the old head, halt installation and request cross-reference re-verification

Request a Fitment-Verified Quote

Provide your Kubota machine model and engine serial number, or send a photograph of the existing cylinder head casting number and nameplate. The technical team will cross-reference your number against the full interchange chain, confirm which V1505 variants your machine requires, and return a fitment-verified recommendation with dimensional documentation.

Frequently Asked Questions

Q: How do I confirm this cylinder head fits my specific Kubota machine when I only have the model number? A: Provide the machine model such as KX71-3 or B3030HSD along with any visible engine serial. The technical team cross-references the 14 known alternate numbers against your specific variant within the V1505 family, checking combustion chamber volume and port layout compatibility before confirming fitment. This eliminates the risk of receiving a head that bolts on but operates outside specification.

Q: My old part number doesn't match any listing — can it be cross-referenced to a current number? A: Yes. The cross-reference chain for this cylinder head includes superseded and discontinued Kubota numbers that may not appear in current catalogs. Submit your existing number or a photograph of the casting mark. The team traces the supersession path through the 14 documented references to identify the correct current replacement, including variant-specific differences.

Q: Why are there so many different part numbers for what looks like the same V1505 cylinder head? A: Kubota revised the V1505 head design across engine generations and emission tiers. Each revision received a new part number even when the external casting appeared identical. Combustion chamber volume, valve seat angles, and port profiles changed between E2B, E3B, and E4B variants. The cross-reference table maps these revisions so buyers can identify the correct head for their specific engine serial.

Q: Can I order one unit as a sample to verify fitment before placing a larger order? A: Single-piece orders are accepted with no minimum quantity requirement. Fleet operators and repair centres managing multiple Kubota machines commonly order one cylinder head for physical fitment trial, confirming bolt pattern, port alignment, and valve train compatibility before committing to a bulk purchase across the fleet.

Q: I only have a machine model, no readable nameplate or part number — can you still identify the right head? A: Machine model alone is often sufficient. Provide the Kubota model designation and any available production year or serial range. The technical team narrows the applicable V1505 variant and returns the matching cylinder head specification along with dimensional photographs for your visual confirmation before dispatch.