Holiday Notice: We will be closed for Thanksgiving on Thurs., November 27. Orders will ship the next business day. Please note that shipping carriers may have varied holiday hours. 

My Cart 0
  • Sign In
My Quote
Your Source for Truck Parts & More 1.877.DL.ORDER
  • Compare Products
main product photo
In Stock!

Cummins Belt Tensioner | 3976834

SKU
CUM 3976834
MPN
3976834
Special Price $144.14 Regular Price $180.17

Free Haul Days enjoy Free Shipping on qualifying orders.Details

Add to Wish List Add to Compare

Have a Question for Our Team?

Our Customer Service team is ready to help. Call 1.877.DL.ORDER or Monday - Friday 8 AM - 4:30 PM ET

Description

The 3976834 Cummins Belt Tensioner is designed to maintain proper tension on the engine’s drive belt, ensuring efficient operation of critical components such as the alternator, water pump, and air conditioning compressor. Manufactured to Cummins' exact specifications, this high-quality tensioner provides consistent performance and reduces wear on the belt system. Built for durability, it withstands high temperatures and demanding engine conditions for long-lasting reliability. Ideal for maintaining engine efficiency, this belt tensioner meets industry standards for performance and dependability.

WarningWARNING: Cancer and Reproductive Harm - https://www.P65Warnings.ca.gov

More Information
More Information
Shipping Weight (lb) 5.00
Manufacturer Cummins Inc.
Shipping Length (in) 12.00
Shipping Width (in) 9.00
Shipping Height (in) 6.00
Returnable Yes
Core Exchange No
More products from Cummins Inc.
  1. Cummins Turbo Speed Sensor Kit | 5643241
    Cummins Turbo Speed Sensor Kit | 5643241
    Special Price $255.74 Regular Price $319.68
    Add to Wish List Add to Compare
  2. Cummins Turbocharger Oil Drain Connection | 3067993
    Cummins Turbocharger Oil Drain Connection | 3067993
    Special Price $229.09 Regular Price $286.36
    Add to Wish List Add to Compare
  3. Cummins O-ring Seal | 3931824
    Cummins O-ring Seal | 3931824
    Special Price $5.25 Regular Price $6.56
    Add to Wish List Add to Compare
  4. Cummins O-ring Seal | 43463-A
    Cummins O-ring Seal | 43463-A
    Special Price $4.55 Regular Price $5.69
    Add to Wish List Add to Compare
  5. Cummins Injector Seal | 3976371
    Cummins Injector Seal | 3976371
    Special Price $10.56 Regular Price $13.20
    Add to Wish List Add to Compare
  6. Cummins Male Adapter Elbow | 5318058
    Cummins Male Adapter Elbow | 5318058
    Special Price $35.96 Regular Price $44.95
    Add to Wish List Add to Compare
  7. Cummins Studded Flange Cap Screw | 3680953
    Cummins Studded Flange Cap Screw | 3680953
    Special Price $14.84 Regular Price $18.55
    Add to Wish List Add to Compare
  8. Cummins Thermostat Kit | 3802968
    Cummins Thermostat Kit | 3802968
    Special Price $58.95 Regular Price $73.69
    Add to Wish List Add to Compare
  9. Cummins Plain Hose | 5396203
    Cummins Plain Hose | 5396203
    Special Price $15.01 Regular Price $18.76
    Add to Wish List Add to Compare
  10. Cummins Hexagon Flange Head Cap Screw | 3944593
    Cummins Hexagon Flange Head Cap Screw | 3944593
    Special Price $5.37 Regular Price $6.71
    Add to Wish List Add to Compare
  11. Cummins Injector Fuel Supply Connector | 5346206
    Cummins Injector Fuel Supply Connector | 5346206
    Special Price $42.21 Regular Price $52.76
    Add to Wish List Add to Compare
  12. Cummins Exhaust Gas Differential Pressure Sensor | 2871960
    Cummins Exhaust Gas Differential Pressure Sensor | 2871960
    Special Price $174.59 Regular Price $218.24
    Add to Wish List Add to Compare
© 2025 Duallane Truck Parts, Inc.