Kubota V3307 & V2607 Turbocharger Guide — TD04L4 / TD03 OEM Parts for Bobcat, CAT & Compact Equipment | HHX PARTS

Kubota V3307 and V2607: The Compact Diesel Engine in a Generation of Skid Steers, Loaders, and Compact Tractors

Kubota is Japan’s largest construction equipment manufacturer and one of the world’s leading producers of compact diesel engines. The V3307 (3.3L, 4-cylinder) and V2607 (2.6L, 4-cylinder) are Kubota’s primary turbocharged compact engine platforms — powering skid steer loaders, compact track loaders, compact tractors, telehandlers, and industrial equipment from Bobcat, Caterpillar, Kubota, and numerous other OEM brands.

These engines occupy the critical mid-range between the very small Yanmar TNV platform (1.6–2.5L) and the full-size Cummins and CAT platforms. They are found in machines that work the hardest duty cycles in the most demanding environments: indoor construction, site preparation, landscaping, agriculture, and rental fleet operations across North America, Europe, and Australia.

The turbocharger fitted to these engines — primarily the Mitsubishi TD04L4 e o Mitsubishi TD03 — is a compact but critical component. At PEÇAS HHX, we supply multiple TD04L4 and TD03 variants covering the full V3307 and V2607 application range, including Bobcat, Caterpillar, Manitou, and standalone Kubota equipment.

Engine Overview: Kubota V3307 vs V2607

Important note: Caterpillar markets the V3307 as its own “3.3L” engine (CAT part numbers prefixed 3XX-XXXX) and the V2607 as its “2.6L” engine. The turbocharger OEM part numbers differ between Kubota-branded and CAT-branded applications for the same engine — always verify which OEM channel the machine was sold through before ordering.

OEM Turbocharger Cross-Reference

V3307 — Bobcat Skid Steer / Compact Track Loader

V3307 — Caterpillar 3.3L Industrial / Construction

V2607 — Bobcat Compact Excavator and Skid Steer

V2003 / F5C — Agricultural and Light Industrial (Kubota / Iveco)

HHX PARTS In-Stock Products for Kubota Engines

The following turbochargers for Kubota-powered compact equipment are available directly from HHX PARTS:

Kubota V3307 — Bobcat Skid Steer / Compact Track Loader

• TD04L4 Turbocharger 7008469 / 6667847 / 49177-03200 — For Bobcat S630, S650, T630, T650 with Kubota V3307-DI-TE3-Q / V3300T engine

Kubota V3307 — Caterpillar 3.3L Industrial & Construction

• TD04L4 Turbocharger 397-9979 / 49177-03186 / 4979838 — For Caterpillar Industrial 3.3L Engine V3307-DI-TE3 — CAT compact construction equipment
• TD04HL Turbocharger 49189-02711 / 235-4964 / 10R-7602 / 234-4894 — For CAT Earth Mover 4D13T / 3044C engine — Kubota-based CAT compact equipment
• TD04HL4 Turbocharger 49189-02730 / 49S89-02730 / 210-030-070 — For Caterpillar / Kubota S4S / Perkins 804D-33T engine

Kubota V2003 / Iveco F5C — Agricultural & Light Industrial

• TD03 Turbocharger 49131-05500 / 49131-02531 / 504242763 — For Iveco Agricultural Tractor F5C / Kubota V2003 / Mitsubishi S4Q2 engine
• TD03 Turbocharger 49131-05512 / 5802531479 / 504265216 — For Bobcat / Kubota Agricultural Tractor with Iveco F5C engine

For Kubota V2607 (Bobcat E50/E55/S550/S570/S590) and SVL75 / SVL90 compact track loader turbochargers (1J752-17012, 1J431-17012), contact our technical team with your Kubota or Bobcat part number and engine serial. We respond within 24 hours.

Common Applications: Machines Powered by Kubota V3307 and V2607

Bobcat Skid Steer Loaders (V3307)

• Bobcat S630 / S650 / S740 / S750 / S770 / S850 — V3307-DI-TE3-Q engine (TD04L4 7008469)
• Bobcat T630 / T650 / T740 / T750 / T770 / T870 — V3307 series (TD04L4)
• Bobcat A770 all-wheel steer — V3307 engine

Bobcat Compact Excavators (V2607)

• Bobcat E50 / E55 / E57 — V2607-DI-T engine (TD03)
• Bobcat E60 / E63 — V2607-T engine

Bobcat Compact Track Loaders (V3307)

• Bobcat S550 / S570 / S590 — V2607-T engine (TD03)
• Kubota SVL65-2 / SVL75-2 / SVL75C — V3307-CR-TE4B engine (TD04L4 1J752-17012)
• Kubota SVL90-2 — V3307 Tier 4 Final engine

Caterpillar Compact Equipment (V3307 / 3.3L)

• CAT 246D / 256C / 262D / 272D / 277D / 287D / 289D / 299D skid steer loaders — 3.3L V3307-based engine (TD04L4 397-9979)
• CAT 246D3 / 262D3 / 272D3 — updated Tier 4 Final V3307 engine variants
• CAT 420F / 430F backhoe loader — 3.3L and 2.6L Kubota-sourced engines in some configurations
• CAT compact track loaders and multi-terrain loaders — 249D, 259D, 279D, 289D series

Kubota Brand Equipment

• Kubota KX080-4 / KX080-4α compact excavator — V3307 engine
• Kubota U50-5 / U55-4 — V3307 compact excavator engine
• Kubota M5000 / M6000 / M7000 compact tractor series — V3307 and V2607 variants
• Kubota RTV-X1100 / RTV-X1140 utility vehicle — V3307 engine

Agricultural and Industrial Applications

• Manitou MT523 / MT625 compact telehandler — Kubota V2607 / V3307 engine variants
• Iveco agricultural tractors — F5C engine (TD03 49131-05500 / 49131-05512)
• Various compact generator sets — V2607-DI-T and V3307-DI-T standalone engine configurations
• Mitsubishi S4Q2-powered compact industrial equipment — TD03 cross-application

6 Warning Signs Your Kubota V3307 / V2607 Turbo Is Failing

1. Black smoke during full-throttle loader operations — the most visible early symptom on V3307-powered Bobcat and CAT skid steers. During bucket fill, high-speed travel, or sustained grading, a worn TD04L4 cannot maintain boost, causing visible black exhaust smoke. On rental fleet machines that are consistently run hard, this symptom can appear before 3,000 hours.
2. Reduced breakout force on compact excavators (V2607) — operators of Bobcat E50–E60 excavators notice turbo decline first as reduced bucket breakout force and slower cycle times during sustained digging. Because the V2607 is a relatively small engine, even a modest reduction in boost has an immediately noticeable effect on hydraulic performance.
3. Oil in the air filter housing — compressor seal failure on the TD04L4 and TD03 causes an oily residue in the air filter housing that is detectable during routine filter replacement. On Bobcat machines, the air filter access is designed for quick inspection — checking for oil at every filter change takes 30 seconds and catches seal failure early.
4. Turbo whine on Kubota SVL compact track loaders — the V3307 in the SVL75 and SVL90 produces a distinctive bearing whine when the TD04L4 journal bearings wear. SVL operators often notice the sound first during road travel between work sites — the sustained constant engine speed under light load makes the bearing noise more audible than during high-load work cycles.
5. Fault codes on Tier 4 Final V3307 machines — CAT 246D3 and Kubota SVL75-2 machines with Tier 4 Final engines use more sophisticated boost management. Fault codes P0299 (underboost) or boost sensor deviation codes indicate turbocharger performance below the ECU’s expected map — often triggered before any visible symptoms appear.
6. Excessive oil consumption on high-hour rental fleet units — rental fleet Bobcat S630–S850 machines that have accumulated 4,000–6,000 hours without turbo service often show rising oil consumption. Worn TD04L4 seals allow oil to enter the intake and combust — track oil consumption trend across consecutive service intervals to detect this early.

Kubota V3307 / V2607 Specific Failure Patterns

• Rental fleet accelerated wear — Bobcat skid steers and CAT compact equipment in rental applications experience some of the most aggressive duty cycles of any compact equipment. Machines are frequently operated by inexperienced operators at full throttle, with minimal warm-up and immediate hot shutdown. Rental fleet TD04L4 turbochargers consistently reach end-of-life at 3,500–5,000 hours versus 6,000–8,000 hours on owner-operated machines with consistent maintenance. Rental fleet distributors should stock TD04L4 units as a routine high-turnover SKU.
• Cold start oil starvation in northern climates — V3307 and V2607 engines used in Canadian, Scandinavian, and northern European construction see extreme cold start conditions (-20°C to -35°C). The TD04L4’s small oil passages take longer to fill with cold, viscous oil than larger turbos — bearing dry-run damage during the first 5–10 seconds of cold start is the dominant failure mode in these climates. Full-synthetic low-viscosity oil (5W-30) and a 60-second minimum idle before applying load is mandatory in cold climate applications.
• Blocked oil feed from over-extended service intervals — many V3307 and V2607 oil feed lines develop partial coking blockage at the banjo bolt orifice between 2,000 and 4,000 hours, particularly in machines that are not always serviced on the OEM-specified interval. The small orifice diameter in these compact engine feed lines makes them significantly more sensitive to partial restriction than larger turbos. Replace the banjo bolt and feed line at every turbocharger service regardless of visible condition.
• CAT part number vs Kubota part number mismatches — a common and costly error in the compact equipment aftermarket. Caterpillar markets the V3307-based 3.3L engine under CAT part numbers (e.g. 397-9979), while Kubota markets the same engine under Kubota numbers (e.g. 1J770-17012). The physical turbocharger may be identical, but ordering from the wrong cross-reference for a specific Tier level or application variant can result in receiving a unit with an incompatible actuator or turbine housing A/R ratio. Always specify both the machine model AND the engine serial when ordering.

Specification Checklist for Ordering

• Machine make, model, and serial number — e.g. Bobcat S650, serial 531511001 — this identifies the exact Tier level and engine variant
• Engine serial number — confirms the Kubota engine variant code (V3307-DI-TE3-Q, V3307-CR-TE4B, V2607-DI-T etc.)
• OEM part number from turbo data plate or parts manual — for Bobcat machines: Bobcat part number (7008469 etc.); for CAT machines: CAT part number (397-9979 etc.); for Kubota equipment: Kubota 1Jxxx-17012 number
• Tier level — Tier 3, Tier 4 Interim, or Tier 4 Final — critical for V3307 as different Tiers use different TD04L4 calibrations and actuator configurations
• Bobcat vs Kubota vs CAT channel — confirm which OEM sold the machine; cross-references differ between channels even for identical physical engines

Why HHX PARTS for Kubota V3307 / V2607 Turbochargers?

• Full V3307 coverage — TD04L4 (Bobcat 7008469), TD04L4 (CAT 397-9979), TD04HL (CAT 49189-02711), TD04HL4 (CAT/Kubota S4S 49189-02730)
• V2003 / F5C coverage — TD03 in both Kubota and Iveco F5C variants (49131-05500, 49131-05512)
• Bobcat / CAT / Kubota cross-referencing — we maintain all three OEM numbering systems and can confirm the correct unit for your specific machine channel
• New OEM-grade TD04L4 and TD03 units — dynamically balanced, flow-bench tested before shipment; not remanufactured cores
• 7-day lead time on stocked V3307 TD04L4 variants; 20-day for lower-volume applications
• Factory-direct pricing — significant savings versus Bobcat dealer, CAT dealer, or Kubota dealer parts pricing; particularly relevant for rental fleet operators sourcing in volume
• Global supply — serving compact equipment dealers, rental fleet operators, and independent workshops across North America, Europe, Australia, and Asia

Further Reading

• Yanmar 4TNV & 4TNE Turbocharger Guide — IHI RHF4/RHF5 for Compact Excavators
• Isuzu 4HK1 & 6HK1 Turbocharger Guide — RHF55V for Hitachi ZX200
• Caterpillar C7, C9, 3116 & 3126 Turbocharger Guide
• The Complete Turbocharger Maintenance Manual
• The Complete Turbocharger Buyer’s Guide: 8 Costly Mistakes to Avoid

Request a Quote for Your Kubota V3307 / V2607 Turbocharger

Send us your Bobcat, CAT, or Kubota OEM part number, machine model and serial, or engine variant code — and we will confirm the correct unit, availability, and pricing within 24 hours.

• Email: gzlh2022@gmail.com
• Phone / WhatsApp: +86 18170714612
• Website: www.hhxparts.com