Caterpillar 3306 Engine Turbocharger 7N7748

7N7748 / 7N-7748 Turbocharger for Caterpillar 3306 Engine

The 7N7748 / 7N-7748 turbocharger is supplied for Caterpillar 3306 and 3306B diesel engine repair. It is used to restore engine boost pressure, air intake performance and stable combustion when the original turbocharger is worn, leaking oil, damaged or no longer providing normal boost response.

Part Number and Engine Application

The main part number for this page is 7N7748 / 7N-7748. The number 0R-5807 can be used as a matching reference for the related Cat reman turbocharger. Final matching should still be confirmed by turbocharger nameplate, engine model and removed sample photos before shipment.

Part Number: 7N7748 / 7N-7748

Ref Cross: 0R-5807

Turbo Model: 3LM series turbocharger

Engine Model: Caterpillar 3306 / 3306B

Machine Application: CAT D6D, D6G, D6H, 966C, 140G and 14G applications with 3306 engine

Product Type: Engine Turbocharger

Application Notes for CAT 3306 and 3306B Engine

This turbocharger should be checked for Caterpillar machines using 3306 or 3306B engine references. Common inquiry applications include D6D, D6G, D6H, 966C, 140G and 14G, but the correct turbocharger must still be confirmed by the old turbo nameplate and engine model.

Main Search Signal: 7N7748 / 7N-7748 turbocharger

Matching Number: 0R-5807

Engine Signal: Caterpillar 3306 / 3306B

Machine Signal: CAT D6D / D6G / D6H / 966C / 140G / 14G applications

Confirmation Method: Turbo nameplate, old part number, engine model and removed turbo photos

Key Checking Points Before Order

Turbochargers should not be confirmed only by machine model. The same machine model may use different engine versions or turbocharger specifications, so the old turbocharger plate number and engine model should be checked before quotation.

Part Number Check: Confirm 7N7748 or 7N-7748 from the old turbocharger plate, supplier record or removed sample.

Cross Number Check: If the buyer provides 0R-5807, confirm it together with engine model and turbo photos.

Engine Check: Confirm whether the engine is Caterpillar 3306 or 3306B.

Machine Check: Confirm D6D, D6G, D6H, 966C, 140G or 14G application if the turbo is ordered by machine model.

Sample Check: Provide photos of the old turbocharger from the compressor side, turbine side, actuator side and nameplate side.

Turbocharger Replacement Notes

Before replacing the 7N7748 turbocharger, the engine air intake system, exhaust manifold, oil feed line, oil return line and air filter condition should be checked. Turbocharger failure can be caused by oil starvation, dirty oil, air restriction, exhaust leakage or foreign object damage.

After installation, the lubrication system should be primed before engine start. The oil line should be clean, the air intake pipe should be free from debris, and the engine should be checked for abnormal smoke, oil leakage, boost pressure loss or unusual noise during testing.

Recommended Information for Quotation

Part Number: 7N7748 / 7N-7748

Matching Number: 0R-5807 if available

Engine Model: Caterpillar 3306 / 3306B

Machine Model: D6D, D6G, D6H, 966C, 140G, 14G or other 3306 engine application

Old Sample: Turbocharger photos from multiple angles

Nameplate: Clear photo of the turbocharger tag or stamped number

Order Details: Required quantity and destination country

FAQ

Is 7N7748 the same as 7N-7748?

Yes. 7N7748 and 7N-7748 are the same main part number format for this turbocharger page.

Can 0R-5807 be used as a matching number?

Yes. 0R-5807 can be used as a matching reference for this turbocharger page. Final confirmation should still be based on old turbo photos, nameplate and engine model.

Is this turbocharger for Caterpillar 3306 engine?

Yes. This page is focused on 7N7748 / 7N-7748 turbocharger replacement for Caterpillar 3306 and 3306B engine applications.

What should I provide before ordering?

Please provide the old turbocharger part number, turbo nameplate photo, engine model, machine model and clear photos of the removed turbocharger.

Do I need to check oil lines before replacing the turbo?

Yes. Oil feed and oil return lines should be checked and cleaned before installation. Poor lubrication can damage a replacement turbocharger quickly.