Turbo TD04L4 436-1920 | Verified Fitment for CAT 308.5 259D

Cross-Reference Verified — Every alternate number for 436-1920 mapped against your C3.3B engine serial before dispatch.

Technical Specifications

Application Suitability

When the Same Part Number Ships in Four Variants

A Turbocharger for CAT 308.5 259D / 436-1920 cross reference fitment search often returns results that look identical but carry subtle internal differences. The base number alone does not guarantee a correct fit on your specific C3.3B engine build.

Superseded part numbers accumulate across machine generations. A turbo that fits a 308.5 built in one production window may carry a different compressor housing orientation than one for a later 308E2 CR, even though the catalog lists the same reference. Cross-reference tables copied between sellers propagate these errors forward, and the mismatch only reveals itself when the machine is already torn down in the yard [NEED_CITE: turbocharger variant identification practices in aftermarket distribution].

Machine Model and Serial Range Coverage

This Turbocharger for CAT 308.5 259D / 436-1920 cross reference fitment listing covers excavators from 308 through 310, the full 236D to 289D3 skid steer range, compact wheel loaders 906M to 908M, and AP300F/AP355F pavers. Each entry is mapped to the C3.3B engine platform, but fitment depends on more than the model badge. Production serial breaks determine which variant of the turbo housing and oil feed arrangement your machine requires.

Interface Verification Before Commitment

Mounting flange bolt patterns, oil feed and return port positions, and the intake-to-exhaust flange angle are the three interfaces that separate a clean installation from a forced fit. On the TD04L4, the oil port clocking can differ between sub-models like the TD04L4-09TK3-5.0 and other variants. A Turbocharger for CAT 308.5 259D / 436-1920 cross reference fitment order should always include a pre-shipment dimensional check against your engine serial number [NEED_CITE: turbocharger oil port orientation verification for compact diesel engines]. We confirm compressor housing rotation, turbine inlet flange geometry, and mounting hole spacing before the unit leaves the warehouse.

Reading the Specifications That Matter

The TD04L4 designation tells a rebuild shop the turbine wheel diameter family and compressor trim range, which directly influence boost delivery at the C3.3B operating envelope. The TD04L4-09TK3-5.0 variant specifies the turbine housing A/R ratio and compressor wheel geometry matched to this engine's airflow demand. Selecting the wrong A/R shifts the boost curve, resulting in either sluggish low-end response or excessive back-pressure at rated speed. The ISO 9001 quality framework applied here covers dimensional inspection and rotor balance verification, ensuring the assembled unit meets the vibration and sealing requirements of a compact diesel installation.

The Cost of a Forced Fit

A turbo that bolts on with slight persuasion often fails within the first hundred operating hours. Misaligned oil feed ports starve the bearing cartridge, and a flange under stress from an incorrect bolt pattern develops cracks under thermal cycling. The machine goes back down, the teardown repeats, and the second downtime window costs the project more than the first [NEED_CITE: turbocharger installation failure modes from dimensional mismatch]. This is why we refuse to ship on part number alone.

Sourcing With Certainty

Our own production lines and qualified sourced supply operate under a single warranty, so a turbocharger and its associated gaskets carry the same coverage terms. Part identification works from a part number, a machine model, a photograph of the nameplate, or a rubbed-off data plate — whichever is all you have. Cross-reference verification traces superseded and alternate numbers including CA436-192, 436-192, and 436192. A sample unit ships for physical trial fitment before any bulk commitment, and the technical team confirms sub-model compatibility against your engine serial.

Documentation & Verification

• Commercial invoice lists turbo model, sub-variant, and engine compatibility confirmation
• Cross-reference sheet mapping 436-1920 to alternate numbers, marked reference only
• Dimensional inspection record covering flange pattern and port orientation
• Warranty terms covering manufacturing defects for 3-12 months
• Pre-dispatch packing photographs showing unit condition and labeling

Fitment Check Before Installation

• Compare mounting bolt hole spacing against old turbo before removing protective caps
• Verify oil feed and return port clocking matches C3.3B block orientation
• Confirm intake flange angle aligns with existing charge air piping without force
• Hand-rotate compressor wheel to check for binding before oil line connection
• If any interface mismatches, halt installation and contact technical team with photos

Request a Fitment Verification

Send your machine model, serial number, and engine type — or a photograph of the existing turbo nameplate — and receive a confirmed compatibility check within two working hours. For distributors sourcing across multiple machines in a mixed fleet, provide the full equipment list so we can map each unit to the correct sub-variant and arrange sample dispatch where needed.

Frequently Asked Questions

Q: How do I confirm this turbocharger fits my specific CAT machine? A: Provide your machine model, serial number, and engine build code. We cross-check the TD04L4 sub-model against your C3.3B configuration, verifying oil port position, flange pattern, and compressor housing orientation before confirming compatibility.

Q: My old part number is different — is 436-1920 still the right replacement? A: Part numbers get superseded across production runs. We trace CA436-192, 436-192, and 436192 against your machine serial to confirm whether 436-1920 is the correct current equivalent, or whether a different variant is required.

Q: Why does the same base turbo have multiple sub-model designations? A: The C3.3B engine is configured differently across machine models. Turbine housing A/R ratio, compressor trim, and oil port clocking change to match each application. We identify which sub-model your engine build requires before shipping.

Q: I only have a machine model, no readable part number — can you identify the right turbo? A: Yes. Send the machine model and serial number, or a photo of the engine nameplate. We use the production data to determine the correct turbo variant and confirm fitment before processing your order.

Q: Can I get a sample unit to test-fit before placing a larger order? A: Sample units are available for physical fitment trials. This lets workshops and distributors verify flange alignment, port orientation, and hose routing on the actual machine before committing to a bulk purchase.