Free Shipping - Orders over $75 | Call us today at (800)-877-1911
Shopping Cart

Bully Dog

In 2006, Bully Dog launched their first aftermarket product for heavy duty semi-trucks/articulated trucks. More than just raw horsepower, Bully Dog's goal from the beginning in the heavy duty market was to calibrate engines to run more efficiently, and in turn produce measurable improvements in fuel economy. With intimate knowledge of the heavy duty lifestyle, Bully Dog understands just how essential mitigating rising fuel costs is to each and every operator's livelihood. Bully Dog's passion for excellence is making Bully Dog Big Rig now a full-fledged heavy duty outfitter a market leader in the heavy duty market. With wide variety of turbochargers, intake & exhaust manifolds, accessories, and the industry's most highly-advanced tuners, big rig owners across the globe can become better equipped to maximize performance and efficiency on the route ahead.
Bully Dog

View as List Grid

Items 21-30 of 42

Set Descending Direction
per page
  1. Sale
    Bully Dog 40387

    Bully Dog Pyrometer probe For Sensor Dock Station 40383 w/ Pyro Probe 40384

    Special Price $42.49 Regular Price $55.99
    SKU: BUL-40387
    • Pyrometer probe
    • Bully Dog Pyrometer probe
    • Pyrometer Sensor
    • Bully Dog Pyrometer probe For Sensor Dock Station 40383 w/ Pyro Probe 40384
    • 342 - 2
    Learn More
  2. Sale
    Bully Dog 40400-100

    Bully Dog Main HDMI style harness For GT 40400-100

    Special Price $26.55 Regular Price $34.99
    SKU: BUL-40400-100
    • HDMI Cable for GT
    • Bully Dog Main HDMI style harness
    • Computer Chip Programmer Interface Cable
    • Bully Dog Main HDMI style harness For GT 40400-100
    • 17 - Black
    Learn More
  3. Sale
    Bully Dog 40400-101

    Bully Dog Power wire For GT 40400-101

    Special Price $9.86 Regular Price $12.99
    SKU: BUL-40400-101
    • Power wire for GT
    • Bully Dog Power wire
    • Computer Chip Programmer Power Cable
    • Bully Dog Power wire For GT 40400-101
    • 17 - Black
    Learn More
  4. Sale
    Bully Dog 40400-102

    Universal T-slot windshield Mount For GT 40400-102

    Special Price $15.17 Regular Price $19.99
    SKU: BUL-40400-102
    • Universal T-slot
    • Universal T-slot windshield Mount
    • Computer Chip Programmer Mounting Bracket
    • Universal T-slot windshield Mount For GT 40400-102
    • 10 - Plastic
    Learn More
  5. Sale
    Bully Dog 40400-105

    Bully Dog OBDll block replacement For GT 40400-105

    Special Price $31.11 Regular Price $40.99
    SKU: BUL-40400-105
    • OBDll Replacement
    • Bully Dog OBDll block replacement
    • Computer Chip Programmer OBD Block
    • Bully Dog OBDll block replacement For GT 40400-105
    • 1385 - Black
    Learn More
  6. Sale
    Bully Dog 40460B

    Bully Dog GTX Performance Tuner 40460B

    Special Price $562.16 Regular Price $599.00
    SKU: BUL-40460B
    • If coming from Google please follow the URL to search by your vehicle!
    • https://www.ajusa.com/shop-by-brand/bully-dog.html
    • Check fitment information in description before ordering
    • GTX Tuner
    • Bully Dog GTX Tuner
    • Computer Chip Programmer
    • Bully Dog GTX Performance Tuner 40460B
    • Illuminated - Yes
    Learn More
  7. Sale
    Bully Dog 40463B

    Bully Dog GTX Vehicle Expansion Kit For GTX 40463B

    $249.00
    SKU: BUL-40463B
    • GTX Expansion Kit
    • Bully Dog GTX Vehicle Expansion Kit
    • Computer Chip Programmer Interface Cable
    • Bully Dog GTX Vehicle Expansion Kit For GTX 40463B
    • 17 - Black
    Learn More
  8. Sale
    Bully Dog 40465B

    Bully Dog GTX WATCHDOG For MONITORING SYSTEM OPTIMIZED FOR CUMMINS 40465B

    Special Price $468.55 Regular Price $499.00
    SKU: BUL-40465B
    • If coming from Google please follow the URL to search by your vehicle!
    • https://www.ajusa.com/shop-by-brand/bully-dog.html
    • Check fitment information in description before ordering
    • GTX WATCHDOG
    • Bully Dog GTX WATCHDOG
    • Computer Chip Programmer
    • Bully Dog GTX WATCHDOG For MONITORING SYSTEM OPTIMIZED FOR CUMMINS 40465B
    • Illuminated - Yes
    Learn More
  9. Sale
    Bully Dog 41102

    Bully Dog Pre-Programmed 4 Position Chip For Ford 41102

    Special Price $429.54 Regular Price $449.99
    SKU: BUL-41102
    • If coming from Google please follow the URL to search by your vehicle!
    • https://www.ajusa.com/shop-by-brand/bully-dog.html
    • Check fitment information in description before ordering
    • Pre-Prog 4 Pos Chip
    • Bully Dog Pre-Programmed 4 Position Chip
    • Computer Chip Programmer
    • Bully Dog Pre-Programmed 4 Position Chip For Ford 41102
    • Illuminated - No
    Learn More
  10. Sale
    Bully Dog 41103

    Bully Dog Pre-Programmed 4 Position Chip For Ford 41103

    Special Price $429.54 Regular Price $449.99
    SKU: BUL-41103
    • If coming from Google please follow the URL to search by your vehicle!
    • https://www.ajusa.com/shop-by-brand/bully-dog.html
    • Check fitment information in description before ordering
    • Pre-Prog 4 Pos Chip
    • Bully Dog Pre-Programmed 4 Position Chip
    • Computer Chip Programmer
    • Bully Dog Pre-Programmed 4 Position Chip For Ford 41103
    • Illuminated - No
    Learn More
View as List Grid

Items 21-30 of 42

Set Descending Direction
per page