Engine Serial Variants Confirmed — Gasket thickness and valve train components matched to your specific Kubota D1105 suffix before dispatch.
Technical Specifications
| Parameter |
Value |
| Part Number |
1J096-03040 |
| Product Type |
Cylinder Head |
| Cross-Reference |
KEACK-1J096 (for identification purposes), 1J096-03024 (for identification purposes) |
| Machine Fitment |
B21, B2100D, B2100E, B2320DT, B2400HSE, B2410HSD, B26, B2601HSD, B2620HSD, B2630HSD, B7500D, B7500HSD, B7510HSD, B7610HSD, BX2660D, BX2670, BX2680, F2260, F2400, F2560, F2680E, F2690, F2880E-F, FZ2400, KX41-2, KX41H, KX61-2, RTV1100CR, RTV1100CW, RTV1140CPX, RTV-X1100CR, RTV-X1120DR, RTV-X1140R, U25S, ZD1211, ZD28, ZD326, 35DT |
| Material |
High-strength cast iron meeting ASTM A48 Class 35B standards |
| Assembly State |
Complete cylinder head with valves and springs pre-assembled; full gasket kit included |
| Gasket Type |
Multi-layer steel (MLS) head gaskets with elastomer coating |
| Surface Finish (Deck Face) |
Ra 0.8 μm |
| Valve Seat and Guide Tolerance |
±0.005 mm |
| Peak Combustion Pressure Rating |
35 bar |
| Valve Spring Fatigue Life |
120,000-cycle |
| Warranty |
3–12 months against manufacturing defects |
| MOQ |
1 piece |
| Standards |
ISO 9001, ASTM A48 Class 35B |
Application Suitability
| Engine System |
Related Components |
| Valvetrain — Kubota D1105 compact diesel |
Valve cover gasket, rocker arm assembly, push rods |
| Combustion sealing — D1105-EB / E2B / E3B / E4B |
MLS head gasket set, intake and exhaust manifold gaskets |
| Cooling circuit interface — thermostat housing junction |
Thermostat, coolant passage O-rings, water pump |
| Fuel delivery — injector mounting |
Injector sleeve seals, return line washers, fuel filter |
Why the Same Kubota D1105 Suffix Changes the Rebuild Parts List
A Cylinder Head for Kubota D1105 Engine Rebuild is not a single part number across every engine generation — the D1105-EB, E2B, E3B, and E4B suffixes each carry different valve train geometries, gasket thicknesses, and coolant passage layouts. Ordering a head without verifying the exact suffix risks receiving components that physically bolt on but fail to seal under combustion pressure.
In desert environments where ambient temperatures push cooling systems to their limits, I have seen engines return from overhaul with heads that seated correctly on the bench yet leaked coolant into the combustion chamber within the first heat cycle. The root cause was almost always a gasket thickness mismatch or a valve guide bore that did not match the stem diameter specified for that particular engine build. [NEED_CITE: diesel engine cylinder head gasket failure modes in high-ambient-temperature operation]
Matching the Cylinder Head to Your Specific Engine Build
This Cylinder Head for Kubota D1105 Engine Rebuild ships as a complete assembly — valves, springs, and guides are interference-fitted and honed before leaving the facility. The MLS head gasket kit included in the package is selected based on the engine serial prefix and suffix you provide, so a D1105-E4B with updated emission hardware receives the correct gasket stack rather than a generic set. Each rebuild kit addresses the sealing, compression, and timing interfaces as a single verified system.
Gasket Kit Contents and Previous Rebuild History
Engines that have been overhauled before may have had the block deck machined, altering the required gasket thickness. When a block has been surfaced, the standard MLS gasket in the kit may no longer restore correct compression ratio. [NEED_CITE: cylinder head gasket thickness selection after block resurfacing] We verify whether your D1105 has seen prior machining by cross-referencing the engine serial against known rebuild campaigns, and we adjust the gasket kit accordingly. This prevents the scenario where a freshly assembled head loses compression on cylinder three because the gasket cannot compensate for the material removed during a previous deck pass.
Surface Finish, Seat Tolerance, and Combustion Pressure
The deck face is finished to Ra 0.8 μm, which is the surface texture range required for MLS gaskets to seal reliably under repeated thermal cycling. Valve seats and guides are held to ±0.005 mm — tight enough to maintain airflow consistency across all three cylinders while allowing sufficient oil film for guide lubrication. The cast iron body meets ASTM A48 Class 35B, providing the thermal mass and rigidity needed to resist warping under the 35 bar peak combustion pressure this engine produces. Valve springs are rated for 120,000 fatigue cycles, covering multiple overhaul intervals before replacement becomes necessary.
The Hidden Cost of Ordering a Head Without the System
Replacing only the head casting while reusing fatigued valve springs or a compressed gasket from the previous build leads to repeat teardowns within a short operating window. I have walked onto sites where a machine was down for a second time in the same season because the first rebuild addressed the visible crack in the head but ignored the worn guides that allowed oil past the valve stems. [NEED_CITE: valvetrain component interaction and cascading failure in small diesel engines] The result is two sets of labor hours, two gasket kits consumed, and a fleet manager who has lost confidence in the repair.
Why Source This Assembly Through XUNPO
Our own production lines and qualified sourced supply carry the same QC protocol and warranty terms, so whether this Cylinder Head for Kubota D1105 Engine Rebuild comes from our facility or a certified partner, the inspection standard is identical. We stock eight component categories under one account — if your D1105 overhaul also needs piston rings, rod bearings, or a water pump, they ship in one consignment. Identification is possible from a part number, machine model, photograph, or nameplate image. A sample can be supplied for fitment confirmation before you commit to fleet-level quantities. Our technical team confirms compatibility and gasket grade against your specific engine serial.
Documentation & Verification
- Commercial invoice and packing list referencing the exact D1105 suffix and gasket variant shipped
- Cross-reference sheet mapping 1J096-03040, KEACK-1J096, and 1J096-03024 for identification purposes only
- Quality inspection record covering cold and hot pressure testing plus valve lash verification
- Warranty terms specifying coverage scope for material and workmanship defects
- Packing photographs documenting head orientation and gasket kit seal before crate closure
- HS code and customs documentation support for cross-border shipment
Installation & Rebuild Sequence
- Clean the block deck to bare metal and verify flatness with a straightedge before placing the MLS gasket
- Torque the head bolts in the factory-specified spiral pattern to achieve even clamping across all three cylinders
- Check valve lash after the first heat cycle, as new components settle during initial thermal expansion
- Replace injector sleeve seals and thermostat O-rings during the same teardown to avoid a second disassembly
- Run the engine under graduated load for the break-in period to seat valve faces against their new seats
Request a Fitment-Verified Quote
Provide your D1105 engine serial number, including the suffix (EB, E2B, E3B, or E4B), and any known rebuild history such as prior block machining. If the nameplate is unreadable, send a photograph of the block casting number and we will identify the correct variant. This allows us to confirm the gasket kit contents, valve train compatibility, and any oversize components your engine may require.
Frequently Asked Questions
Q: What does the gasket kit include, and does it cover all seals needed for a D1105 head swap?
A: The kit contains an MLS head gasket matched to your engine suffix, valve cover gasket, intake and exhaust manifold gaskets, and coolant passage O-rings. Injector sleeve seals are included if applicable to your build. If your engine has non-standard modifications from a prior rebuild, additional items may be needed — provide the serial number so we can verify completeness before shipping.
Q: My D1105 has an E2B, E3B, or E4B suffix — are the internal components the same across variants?
A: No. Each suffix reflects different emission tiers and internal revisions. Valve sizes, spring rates, and gasket thicknesses can differ between E2B and E4B engines. We match the Cylinder Head for Kubota D1105 Engine Rebuild assembly to your exact suffix to ensure correct combustion chamber volume and sealing geometry.
Q: If the block has been machined previously, how do I confirm the head gasket thickness is still correct?
A: Measure the block deck height or provide the engine serial along with any known machining history. A resurfaced block may require a thicker MLS gasket to maintain proper compression ratio and piston-to-valve clearance. We adjust the gasket kit based on this information before dispatch.
Q: What other engine system components should be inspected or replaced when changing the cylinder head?
A: Inspect push rods for bending, check rocker arm bushings for wear, and replace the thermostat and injector sleeve seals during the same teardown. Valve spring tension should be verified if springs are being reused. Addressing these items together prevents a second disassembly within the same service window.
Q: How do I confirm the engine serial number when the nameplate is worn or painted over?
A: Send a photograph of the block casting number, typically found on the side of the block near the oil filter housing. We cross-reference the casting number against engine build records to identify your D1105 variant. This is sufficient for us to verify the correct head assembly and gasket configuration.
