Kubota V3307-Compatible Overhaul Gasket Kit – Model-Matched

Verified Cross-References — Every superseded part number traced from 1J770-99350 through 1J770-99352 to 1J770-99360 before the overhaul gasket kit ships.

Technical Specifications

Application Suitability

Why the Same Gasket Number Covers Four Different Engine Builds

The base reference 1J770-99360 appears across multiple Kubota V3307 production runs, but bolt-hole spacing and coolant passage alignment shift between serial ranges.

I have watched teardowns stall because a cross-reference table listed 1J770-99350 as interchangeable with 1J770-99360, yet the cylinder head gasket fire ring on the older kit sat two millimeters off-center on a later V3307-CR-T block. The superseded chain — 1J770-99350 to 1J770-99352 to 1J770-99360 — reflects real geometry changes Kubota made between production runs, not administrative reshuffling. When a worn nameplate leaves you guessing which serial range your machine falls into, the Overhaul Gasket Kit for Kubota V3307 / KX080-4 cross reference must be verified against the engine code stamped on the block, not just the machine model painted on the cab [NEED_CITE: Kubota V3307 engine serial range identification methods for aftermarket parts].

Serial Range Coverage Across the SSV75 and KX080-4 Families

The SSV75 alone spans three serial bands — 10001–19999, 20001–49999, and 50001 onward — and each band may call for a different gasket iteration. The KX080-4, KX080-4S, and KX080-4S2 share the same V3307 base engine, yet accessory mounting differences mean the intake manifold gasket profile can vary between the standard and S2 variants. Confirming the exact machine serial number and engine suffix eliminates the most common fitment error: ordering a kit that physically bolts on but leaks at the coolant crossover because the embossed sealing bead does not align with the block passage.

Superseded Number Chain and What It Means for Your Rebuild

Kubota replaced 1J770-99350 with 1J770-99352, then later with 1J770-99360, each time adjusting gasket geometry to match updated machining on the V3307 block and head. Some aftermarket catalogs still list all three as freely interchangeable, which is accurate for certain serial ranges and wrong for others. Before you commit to a bulk order, send the engine code and serial number so the correct Overhaul Gasket Kit for Kubota V3307 / KX080-4 cross reference is confirmed — not guessed from a table [NEED_CITE: aftermarket gasket cross-reference accuracy across superseded Kubota part numbers].

Dimensional Tolerance and Fire Ring Design

The cylinder head gasket in this kit holds ±0.05 mm dimensional tolerance, which matters because the V3307 head and block mating surfaces are machined to similarly tight factory specifications. The multi-layer steel construction with embossed sealing beads provides localized clamping force around each cylinder bore, while the Viton-coated fire rings sustain sealing integrity up to 160 bar peak combustion pressure. Manifold gaskets use graphite-impregnated fiber rated from –40°C to +220°C, covering the full operating envelope from cold-start idle in winter to sustained high-load work in summer dust. Rubber seals meet ASTM D2000, ensuring the oil pan and ancillary seals resist degradation from hot diesel-era lubricants and coolant formulations.

What Happens When the Wrong Kit Goes on the Block

A gasket kit that bolts on but has misaligned coolant passages will not fail immediately — it will weep internally, contaminating oil with coolant over several hundred hours before the operator notices milkshake in the sump. By then the crankshaft bearings may have already suffered. A kit ordered against an incorrect superseded number sometimes forces the mechanic to re-use the old oil pan gasket because the new one has bolt holes in the wrong positions, which defeats the purpose of buying a complete Overhaul Gasket Kit for Kubota V3307 / KX080-4 cross reference in the first place. The machine goes back to work with a partial seal compromise that surfaces as an oil leak two weeks later [NEED_CITE: consequences of gasket misalignment on diesel engine bearing life].

How Fitment Gets Confirmed Before the Kit Ships

Our technical team cross-references your machine model, serial number, and engine code against the superseded number chain and variant-specific geometry records. When a nameplate is worn or painted over, a photograph of the engine block casting number is usually enough to narrow down the serial range. If you are replacing gaskets across a mixed fleet of Kubota and CAT C3.3B-CR-T powered machines, we can prepare a fitment matrix that maps each unit to the correct kit variant. For buyers committing to volume, a single sample kit ships first so your workshop can physically verify hole alignment, fire ring positioning, and manifold gasket profile before the balance of the order leaves Guangzhou.

Documentation & Verification

• Commercial invoice listing each gasket component by position and material specification
• Fitment and cross-reference sheet mapping 1J770-99360, 1J770-99352, and 1J770-99350 to your engine serial range (reference only)
• Dimensional inspection record confirming ±0.05 mm tolerance on cylinder head gasket and manifold gaskets
• Warranty terms covering manufacturing defects for six months from dispatch
• Packing photographs showing kit contents verified against your specific engine build list
• HS code and customs documentation support for destination-country import clearance

Fitment Check Before Installation

• Compare cylinder head gasket bolt-hole pattern against the block before removing old gasket remnants
• Verify fire ring orientation marks align with the numbered cylinder positions on the V3307 block
• Check intake and exhaust manifold gasket profiles against port shapes on both head and manifold flanges
• Confirm oil pan gasket bolt spacing matches the pan rail — some early serial ranges differ from later builds
• Inspect all rubber seals for correct cross-section diameter before fitting into grooves
• If any component does not align, halt installation and provide photographs for cross-reference re-verification

Tell Us What You Are Working On

Provide your machine model, serial number, and engine code so we can confirm the correct Overhaul Gasket Kit for Kubota V3307 / KX080-4 cross reference against our variant database. If the nameplate is unreadable, a clear photograph of the engine block casting number or the old gasket laid flat is usually sufficient. For fleet-wide standardization across Kubota and CAT-powered units, send the full machine list and we will return a fitment matrix before any kit ships.

Frequently Asked Questions

Q: How do I confirm this gasket kit fits my specific Kubota or CAT machine? A: Provide the machine model, serial number, and engine code — for example V3307 or V3307-CR-T. We cross-reference these against the superseded number chain and serial range records to verify hole alignment, fire ring position, and manifold gasket profile before confirming the correct kit. Photographs of the block casting number work when the nameplate is illegible.

Q: Are 1J770-99360, 1J770-99352, and 1J770-99350 interchangeable on all V3307 variants? A: Not universally. Kubota introduced each number to match updated block and head machining across different production runs. Some serial ranges accept any of the three, while others require the specific geometry of 1J770-99360. We verify which reference applies to your exact engine build before shipping.

Q: My machine plate is worn — can you identify the right kit from the model number alone? A: The model number narrows it down, but serial range confirmation is often needed. A photograph of the engine block casting number, the old cylinder head gasket, or even the bolt pattern on the oil pan rail can provide enough detail to pinpoint the correct Overhaul Gasket Kit for Kubota V3307 / KX080-4 cross reference.

Q: Do you supply samples for fitment verification before I commit to a bulk order? A: Yes. A single kit ships first so your workshop can physically check bolt-hole alignment, fire ring positioning, and manifold gasket profile on the actual engine. Once fitment is confirmed, the balance of the order follows under the same verified specification.

Q: What if the gasket kit I received doesn't match my engine build? A: Contact us immediately with photographs of the misaligned component alongside the block or head surface. We will cross-reference the discrepancy against your serial number and dispatch the correct variant. The six-month warranty covers manufacturing defects, and our technical team resolves fitment issues directly.