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The Diesel Techs Discount Codes & Offers

2 discount codes· 10% off listedDetails

We currently list 2 coupon codes for The Diesel Techs.

Largest percentage offer: Apply this code at checkout to get 10% off your order

Coupons & Offers

10%off

Apply this code at checkout to get 10% off your order

OfferCoupon codeApplies toStorewideOffer details

Offer requirements

  • Storewide

Apply the code at checkout and check the final total before paying.

Code

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OfferCoupon codeOffer details

Offer requirements

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Tested at checkout

Recorded checkout results for these products at the time shown. Prices and code eligibility can change.

  • THANKS WorkedTested −$31.95 saved · $3,199.95 cart · 5 items2020-2023 Duramax HD CAN Bus Plugs, 2017-2019 Duramax HD Transmission Tunes, 2010-2012 Cummins HD RACEME Ultra Tuners & Tunes, 2019-2021 Cummins HD MM3 Tunes ONLY, 2004.5-2007 Duramax HD MM3 Tunes ONLYView screenshot & cart
    The Diesel Techs checkout with THANKS, tested 10 Nov 2026, 01:03 UTC

    Select the image to open it at full size.

    Tested products
    ProductCoupon discountTotal
    2020-2023 Duramax HD CAN Bus Plugs1 × $149.99−$1.49$148.50
    2017-2019 Duramax HD Transmission Tunes1 × $599.99−$5.99$594.00
    2010-2012 Cummins HD RACEME Ultra Tuners & Tunes1 × $1,199.99−$11.99$1,188.00
    2019-2021 Cummins HD MM3 Tunes ONLY1 × $649.99−$6.49$643.50
    2004.5-2007 Duramax HD MM3 Tunes ONLY1 × $599.99−$5.99$594.00
    Subtotal
    $3,199.95
    Coupon savings
    −$31.95
    Other savings
    $0.00
    Total before shipping & tax
    $3,168.00

Frequently asked questions

What is the largest percentage discount listed for The Diesel Techs?

Apply this code at checkout to get 10% off your order

Are there any The Diesel Techs discount codes or offers listed?

We currently list 2 offers for The Diesel Techs, including 2 coupon codes. Check the individual offers for eligible items and requirements.

How do I use a discount code at The Diesel Techs?

Select “Show code”, copy the code, then follow the “Shop The Diesel Techs” link. Enter the code in the discount field at checkout and check that the saving appears before paying. Review the offer details if it doesn't apply to your basket.

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