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15% Off Online Orders of Select Parts and Accessories. Enter Promo Code MMJ15 in Cart

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15% Off All Online Orders of Select Parts and Accessories
Receive 15% Off Your Online Purchase. Use promotional code MMJ15 at checkout to receive discount. Not valid in combination with any other discounts or promotions. Not valid on gift cards, special orders, installed merchandise, commercial or fleet purchases. Excludes the following categories: Tires, Wheels, Batteries, Powerstop Brake Kits, Oil, Antifreeze, Refrigerant, Truck Boxes, Vent Visors, Bug Shields and BRANDS: Razor, Traxxas, Superchips, Hypertech, Edge, Bully Dog, Diablo, Edelbrock, Holley, NOS, Proform, Specialty Auto, Thule, Autometer, Accel, K&N, Kenwood, Pioneer, Sony, JVC, MSD and BBK Performance. Valid online until 2:59 am EST on 4/1/17. Online orders scheduled for in-store pick up must be completed by closing on 3/31/17 for discount to apply.

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$17.99
  • Part #: 1561|
  • SKU: 9664418

Available today

Pay in Store Available

    • Adapts to any fitting or dual feed line with 1/8" NPT threads
    • Gauge measures 1 ½ inches
Retail
$17.99
$21.99
$18.69
With Promotion
  • Part #: FST8209|
  • SKU: 1162585

Available today

Pay in Store Available

    • E, 1/4, 1/2, 3/4, and F with a 60 dial sweep
    • Standard 2" white dial for 2-1/16" opening
Retail
$21.99
$22.99
$19.54
With Promotion
  • Part #: FST8219|
  • SKU: 1162666

Available today

Pay in Store Available

    • E, 1/4, 1/2, 3/4, and F with a 60 dial sweep
    • Standard 2" black dial for 2-1/16" opening
Retail
$22.99
$37.99
$32.29
With Promotion
Play
  • Part #: 650330|
  • SKU: 9958979

Available today

Pay in Store Available

    • Engineered for the serious street enthusiast, these gauges guarantee precise fuel pressure settings from 0-15 PSI
    • Gauge measures 1 ½ inches
Retail
$37.99
$38.99
$33.14
With Promotion
  • Part #: 2180|
  • SKU: 9951509

Available today

Pay in Store Available

    • Fuel pressure gauge measures 1 ½”
    • Gauge is liquid filled for the ultimate in vibration resistance
Retail
$38.99
$39.99
$33.99
With Promotion
  • Part #: 1788|
  • SKU: 683122

Available today after 3 p.m.


    • Air fuel ration gauge sports a color changing face
    • Select your favorite display between seven (7) available colors including Blue, Green, Light Blue, Pink, Red, Yellow and White
Retail
$39.99
$44.99
$38.24
With Promotion
  • Part #: 1560|
  • SKU: 312587

Available today

Pay in Store Available

    • Gauge range from 0-15 lbs.
    • Improves performance
Retail
$44.99
$49.99
  • Part #: 1564|
  • SKU: 312570

Available today

Pay in Store Available

    • Reads in ½ pound increments
    • 3/8 inch fuel line adapter included
Retail
$49.99
$84.99
$72.24
With Promotion
  • Part #: 4375|
  • SKU: 9119187

Available today

Pay in Store Available

    • Air fuel ratio gauge measures 2 1/6 inches
    • Works well with most factory narrowband oxygen centers
Retail
$84.99
$199.99
$169.99
With Promotion
  • Part #: 3844|
  • SKU: 954431

Available today

Pay in Store Available

    • Water resistant 52 millimeter round dash mountable casing is perfect for automotive, powersports, marine, and demanding racing applications
    • Wideband oxygen sensor is compatible with all fuel types (leaded, unleaded, diesel, methanol, e85)
Retail
$199.99
$22.99
$18.40
Sale Price
  • Part #: CP8219|
  • SKU: 9540042

Available tomorrow after 12 p.m.


    • Fuel level measures from E to 1/4 to 1/2 to 3/4 to F
    • Requires a fuel level sender
Sale Price
$22.99
$18.40
$37.99
$32.29
With Promotion
Play
  • Part #: 650340|
  • SKU: 9958955

Available tomorrow after 12 p.m.


    • Engineered for the serious street enthusiast, these gauges guarantee precise fuel pressure settings from 0-100 PSI
    • Gauge measures 1 ½ inches
Retail
$37.99
$39.99
$33.99
With Promotion
  • Part #: 2178|
  • SKU: 9951316

Available tomorrow after 12 p.m.


    • Fuel pressure gauge measures 1 ½”
    • Gauge is liquid filled for the ultimate in vibration resistance
Retail
$39.99
$11.33
  • Part #: 91172|
  • SKU: 20034394

Available


    • Enhance your vehicle
    • Rigorously tested
Retail
$11.33
$19.20
$15.36
With Promotion
  • Part #: 59013|
  • SKU: 20058364

Available


    • Fits 3/8 inch fuel lines
    • Specifically for carbureted engines
Retail
$19.20
$104.50
  • Part #: 36013|
  • SKU: 20069905

Available


    • Direct replacements
    • Monitors air/fuel ratio
Retail
$104.50
$177.95
  • Part #: 6593|
  • SKU: 20070291

Available


    • Displays Actual Air/Fuel Mixture
    • Use To Guide Carburetor Adjustment And Jetting
Retail
$177.95
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