BAFFLE GP 3904370 - Caterpillar

3904370 BAFFLE GP Caterpillar parts 966M, 966M XE, 972M, 972M XE

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Alternative (cross code) number:
CA3904370
390-4370
3904370

Buy BAFFLE GP 3904370 Caterpillar genuine, new aftermarket tractor parts with delivery
WHEEL LOADER,

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Belt Tensioner 3922900 3802287 38504 3904370 3937553 45606521 Compatible with Cummins Engine C8.3-250 45606521 6BT 6BTA 6BT5.9 4BT 4BTA 6CT NT855 CM800/QSB6.7 CM850/QSF2.8

$109.99

05 Sep 2025
4.0[1.80] pounds
CN: Xianhaoparts

Belt Tensioner 3922900 3802287 38504 3904370 3937553 45606521 Compatible with Cummins Engine C8.3-250 45606521 6BT 6BTA 6BT5.9 4BT 4BTA 6CT NT855 CM800/QSB6.7 CM850/QSF2.8
Xianhaoparts Part Number: 3922900 3802287 38504 3904370 3937553 45606521 || Compatible with Cummins Engine C8.3-250 45606521 6BT 6BTA 6BT5.9 4BT 4BTA 6CT NT855 CM800/QSB6.7 CM850/QSF2.8 || Package Included: 1 x Belt Tensioner || Easy Installation.Stable Characteristics High Reliability || It Is a Replacement Part Not Original Part. But It Can Work Good For You

Belt Tensioner 3937553 3914086 Compatible with Dodge Compatible with Ram Truck 2500 3500 Compatible with Cummins Engine B3.9L B5.9L 12V 24V Compatible with Freightliner Truck FL80 5.9L

$39.99

05 Sep 2025
3.0[1.35] Pounds
CN: Quueparts

Belt Tensioner 3937553 3914086 Compatible with Dodge Compatible with Ram Truck 2500 3500 Compatible with Cummins Engine B3.9L B5.9L 12V 24V Compatible with Freightliner Truck FL80 5.9L
Quueparts Part Numbers: 3937553 3914086 3904370 3922900 3936203 3973822 3973823 3934818 2DR555 3020-01-341-2477 || Compatible with Dodge Compatible with Ram Truck 2500 3500 Compatible with Cummins Engine B3.9L B5.9L 4B/T/A 6B/T/A 12V 24V Compatible with Freightliner Truck FL80 5.9L || Package Includes: 1X Belt Tensioner || Easy To Install. Manufactured to Precise OE Requirements For Perfect Fit. Reliable Performance. || Replacement Parts. As Good As OEM at a Fraction of the Price. Exact Same Performance as Original

WFLNHB Belt Tensioner Replacement for 4BT 4BTA 6BT 6BTA NT855 5.9L Replacement Part Number 3802287 38504 3904370

$25.67

04 Sep 2025

US: WFLNHB

WFLNHB Belt Tensioner Replacement for 4BT 4BTA 6BT 6BTA NT855 5.9L Replacement Part Number 3802287 38504 3904370
WFLNHB Replacement Part Number: 3922900 1240880H1 3802287 38504 3904370 || Fitment: Replacement for 4BT 4BTA 6BT 6BTA NT855 5.9L || High quality metal, strict process flow, to ensure reliability and stability, maintain the efficient operation of the engine system || Automatically adjust the belt to keep the engine timing belt in tension, so as to keep the engine power normal || Please check the model and part number carefully before buying

Number on catalog scheme:

Caterpillar 3904370 Parts scheme BAFFLE GP

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Compatible equipment models: 3904370:

WHEEL LOADER 966M 966M XE 972M 972M XE Caterpillar

Information:

Illustration 12 g00902266
Terminal box for the master ECM (P1-19) Unused ground for the ECM (P2-36) Signal for cylinders 2 and 4 (P2-37) Signal for cylinders 6 and 8 (P2-38) Signal for cylinders 10 and 12 (P2-39) Signal for cylinders 14 and 16 (P2-44) Signal for cylinders 18 and 20
Use a 151-6320 Wire Removal Tool to remove the signal wire for the suspect sensor from the P2 connector.
Switch the 16 amp circuit breaker ON. Set the engine control to the STOP mode.Note: The run relay and the crank terminate relay must be energized before a diagnostic code for a detonation sensor can be generated. Therefore, the engine must be running. The engine will shut down soon after the diagnostic code for the detonation sensor is activated.
Start the engine. Observe the "Active Diagnostic" screen on Cat ET. Allow a minimum of 30 seconds for any codes to activate.An active "open/short to +batt" diagnostic code is generated for the sensor.
Set the engine control switch to the OFF/RESET position.
Illustration 13 g00985651
Terminal box for the master ECM (1) P2 connector for the master ECM (2) Jumper wire (3) P1 connector for the master ECM
Fabricate a jumper wire that is long enough to reach between the P1 connector and the P2 connector. Install Deutsch terminals on the ends. Install one end of jumper wire (2) into the terminal for the signal wire that was removed from P2 connector (1). Install the other end of the jumper wire into terminal 19 of P1 connector (3) .
Start the engine. Observe the "Active Diagnostic" screen on Cat ET. Allow a minimum of 30 seconds for any codes to activate.An active "short to ground" diagnostic code is generated for the sensor.Expected Result:Active "open/short to +batt" and "short to ground" diagnostic codes are generated according to the above steps.Results:
OK - Active "open/short to +batt" and "short to ground" diagnostic codes are generated according to the above steps. The master ECM is operating correctly. There is probably an open circuit in a harness between the master ECM and the connector for the sensor. The problem could be inside the terminal box for the master ECM.Repair: Remove the jumper wire. Insert the terminal that was removed from the P2 connector. Pull on the wire in order to verify that the terminal is fully inserted into the connector. Repair the harness, when possible. Replace the harness, if necessary.STOP
Not OK - No active "open/short to +batt" and "short to ground" diagnostic codes were generated. The master ECM is not operating correctly.Repair: It is unlikely that the master ECM has failed. Exit this procedure and perform this procedure again. If the problem is not resolved, perform the following steps:Temporarily install a new master ECM. Refer to Troubleshooting, "Replacing the ECM".If the problem is resolved with the new ECM, install the original ECM and verify that the problem returns. If the new ECM operates correctly and the original ECM does not operate correctly, replace the original ECM. Refer to Troubleshooting, "Replacing the ECM".STOPTest Step 7. Check the