Overhaul Full Gasket Kit D1105 D1105T – Verified Fitment for Kubota

Cross-Reference Verified — Each Overhaul Gasket Kit is mapped against 60+ Kubota OEM numbers to match your D1105 or D1105T engine build.

Technical Specifications

Application Suitability

Why the Same Gasket Part Number Ships in Multiple Variants

Kubota revised the D1105 gasket layout across production generations, so one reference number can point to several physically different kits.

When a workshop pulls a worn head gasket from a KX41-2 and reads the stamped number, that number may have been superseded two or three times since the engine left the factory. The 1G993-series references map to earlier D1105 builds, while the 1G995-series covers later revisions with altered coolant passage diameters and additional O-ring positions [NEED_CITE: Kubota D1105 engine service bulletin supersession history]. Ordering by the old number alone risks receiving a kit where the cylinder head gasket bore alignment is offset or the valve cover seal profile does not seat. This Overhaul Gasket Kit for Kubota D1105 / D1105T KX41-2 KX61-2 fitment addresses that gap by cross-referencing over sixty OEM numbers and mapping each to the correct engine serial range.

Serial Range Mapping and Variant Identification

Every D1105 and D1105T engine carries a serial number that determines which gasket geometry applies. The difference between a 1G993-99350 and a 1G995-99350 is not a simple reprint — coolant transfer holes shift position, and the oil pan gasket profile changes from a one-piece perimeter seal to a multi-segment layout. Our cross-reference table ties each OEM number to the applicable serial break, so buyers holding only a machine model like B2400HSD can still receive the correct Overhaul Gasket Kit for Kubota D1105 / D1105T KX41-2 KX61-2 fitment without guessing.

Port Position and Seal Profile Verification

Beyond the head gasket itself, the kit includes exhaust manifold, thermostat housing, and oil feed line seals whose shapes vary between D1105 naturally aspirated and D1105T turbocharged builds. A KX61-2 with a turbocharger requires an oil return gasket with a wider aperture than the non-turbo KX41-2 version [NEED_CITE: Kubota compact excavator turbo plumbing differences across model years]. Physical measurement of port spacing on the old gasket against the new kit before assembly prevents mismatches that only show up once the engine is running under load.

Reading the Specs That Matter for Fitment

The kit contents list covers cylinder head, valve cover, oil pan, exhaust manifold, thermostat, water pump, and crankshaft seal positions. What matters at the bench is whether each individual gasket matches the casting revision of your block. Earlier D1105 blocks use a different water pump mounting pattern than later D1105T blocks, and the corresponding gasket must align with both the pump face and the block surface. Material composition — typically multi-layer steel for the head gasket and composite fiber for the pan — affects how the seal conforms to minor surface irregularities left by previous rebuilds. The ISO-certified manufacturing process holds dimensional tolerances within the range required for proper torque-to-yield head bolt loading [NEED_CITE: multi-layer steel head gasket torque specifications for small diesel engines].

What Happens When the Wrong Variant Goes In

A gasket that almost fits is worse than one that clearly does not. A cylinder head gasket with coolant holes offset by a few millimeters will seal at idle but leak under thermal cycling, pushing coolant into the oil gallery over several weeks of operation. An oil pan gasket with the wrong perimeter profile may seat on three sides but leave a weep path at the timing cover junction, misdiagnosed later as a rear main seal failure. These misfits compound cost through repeated teardowns, contaminated oil, and secondary component damage [NEED_CITE: engine gasket misalignment failure modes in compact diesel rebuilds].

Why Source This Kit Through XUNPO

Our Guangzhou warehouse stocks common D1105 gasket references for fast dispatch, while less common serial-variant kits are built to order with verified cross-reference sheets included. We produce selected gasket lines in-house and source the remainder from qualified ISO-certified partners, all under one account and one warranty. A single sample kit ships for physical fitment confirmation before you commit to fleet-wide quantities. Our technical team cross-checks your engine serial against the supersession table to confirm whether you need a 1G993 or 1G995 series kit. Part identification works from a number, a machine model, or a photograph of a worn nameplate.

Documentation & Verification

• Commercial invoice listing each gasket kit by verified cross-reference number (reference only)
• Fitment sheet mapping your engine serial to the correct D1105 variant
• Dimensional inspection record for head gasket bore and coolant hole positions
• Warranty terms covering manufacturing defects for 3–12 months
• Packing photographs showing kit contents before sealing

Fitment Check Before Installation

• Lay the new head gasket on the block surface and verify every coolant and oil passage aligns before applying sealant
• Compare the old oil pan gasket profile against the new one, checking corner radii and timing cover junction shape
• Confirm the exhaust manifold gasket port count matches your D1105 or D1105T manifold casting
• Measure thermostat housing gasket inner diameter against the housing neck before assembly
• If any seal does not match, halt installation and contact us with photographs for cross-reference review

Inquire with Machine and Engine Details

Send us your machine model, engine serial number, or a photograph of the existing nameplate so we can verify the correct Overhaul Gasket Kit for Kubota D1105 / D1105T KX41-2 KX61-2 fitment. If the engine has been swapped or rebuilt previously, note any known history so we can adjust the cross-reference lookup accordingly. We will return a confirmed part number with the applicable variant before you place an order.

Frequently Asked Questions

Q: How do I confirm which gasket set fits my Kubota D1105 when the nameplate is unreadable? A: Provide the machine model and any visible casting numbers on the block. We cross-reference these against Kubota production records to narrow down the engine serial range, then match the correct gasket variant. A photograph of the old head gasket coolant hole pattern also helps confirm the revision.

Q: Why does my D1105 engine have both 1G993 and 1G995 series references — are they interchangeable? A: These series correspond to different production generations with distinct coolant passage layouts and seal profiles. They are not directly interchangeable. We verify which series applies by checking your engine serial number against the supersession table before confirming the correct Overhaul Gasket Kit for Kubota D1105 / D1105T KX41-2 KX61-2 fitment.

Q: I have a KX41-2 with a replaced engine — how do I verify the correct gasket kit? A: Identify the replacement engine's serial number from the block stamping, not the machine's original build record. Engine swaps are common in compact excavators, and the installed engine may belong to a different serial range than what the machine documentation shows.

Q: Can I order one sample kit to test fitment before placing a bulk order? A: Yes. We ship single-piece sample kits for physical fitment checks. This is especially useful when dealing with superseded numbers or machines with unclear service histories. Confirm fit on one engine before committing to fleet-wide overhaul quantities.

Q: What is the difference between KU-prefixed and non-prefixed part numbers in the cross-reference list? A: KU-prefixed numbers indicate an alternate sourcing channel within the aftermarket cross-reference system. Both prefixed and non-prefixed numbers map to the same physical gasket geometry when verified against the engine serial. We confirm which number applies to your specific D1105 build regardless of prefix.