DMAX Store Discount Codes – Verified Deals & Offers | October 2026
Save on Allison Transmission rebuild kits, fuel injectors with 151 manually verified DMAX Store offers, updated for October 2026. Browse the latest Discount Codes, working discounts, and exclusive deals, with expired offers removed regularly.
DMAX Store offers 0 coupon codes and 151 deals as of October 2026. Today's top offer: Kryptonite Lower Ball Joint for 2001 2010 LB7/LLY/LBZ/LMM at $56.99 Shop Now at DMAX Store. Codes are verified and updated daily.
Find the Kryptonite Lower Ball Joint for 2001–2010 LB7, LLY, LBZ, and LMM applications for $56.99 at DMAX Store. Check fitment details to help ensure compatibility with your vehicle before ordering. Shop now at DMAX Store.
Upgrade your vehicle with the DmaxStore Heavy-Duty 6-Bolt Steering Gear, priced at $660.99 at DMAX Store. Designed for specified 2001–2010 LB7, LLY, LBZ, and LMM applications, this component is worth exploring for your vehicle maintenance needs. Verify compatibility before ordering. Shop now at DMAX Store.
Choose a driver side, passenger side, or both front inner fender liners for 2007.5 to 2010 Sierra LMM models, with optional push rivets.
Upgrade your 2024–2025 L5P Silverado with the Addictive Desert Design Phantom Rear Bumper for $1,798.98, featuring a rugged design built for a bold truck appearance.
Billet heater hose connector compatible with select 2001 to 2014 and 2020 to 2024 diesel applications.
Boost your engine's output with 30% off high-performance turbochargers. Unleash more horsepower and torque.
Achieve tighter steering and control with 30% off all steering gear boxes. Perfect for a responsive driving experience.
Upgrade your drivetrain with 15% off Allison Transmission rebuild kits, ensuring peak performance and durability for your vehicle.
Secure your engine's integrity with 28% off head studs and gaskets. Essential for high-performance builds.
Experience improved steering precision with 20% less on all steering gear boxes.
Unleash more power with 30% off premium cold air intakes. Improve airflow and engine efficiency for better performance.
Experience improved fuel delivery with 10% savings on all CP3 pumps, designed for reliable and consistent performance.
Upgrade your transmission's performance with 15% off Allison Transmission rebuild kits.
Boost your engine's horsepower and torque with 18% savings on cold air intakes and intercoolers.
Upgrade your transmission with 15% off Allison Transmission rebuild kits, ensuring peak performance and durability for your vehicle.
Maintain your vehicle with the Allison Transmission Spin-On Filter, compatible with 2001–2019 LB7, LLY, LBZ, LMM, LML, and L5P applications. Shop Now DMAX Store.
Boost your engine's power and efficiency with 22% savings on cold air intakes, delivering cooler, denser air.
Maintain optimal engine temperatures with 22% savings on premium intercoolers. Essential for turbocharged applications.
Secure your engine's cylinder heads with 35% savings on head studs and head gaskets. Essential for high-performance builds.
Experience significant power gains with 25% savings on high-performance CP3 pumps, delivering optimal fuel delivery for your engine.
Experience significant power gains with 25% savings on high-performance CP3 pumps. Enhance your fuel delivery system today.
Boost your engine's power and efficiency with 40% savings on select intercoolers.
Enhance your suspension's integrity with 35% savings on ball joints and control arms. Ensure a smooth and stable ride.
Upgrade your drivetrain with 15% off Allison Transmission rebuild kits. Restore peak performance and reliability to your truck.
Upgrade your drivetrain with 15% off Allison Transmission rebuild kits, ensuring peak performance and reliability for your vehicle.
Unleash your engine's potential with 30% off high-performance turbochargers.
Upgrade your transmission's performance with 15% off Allison Transmission rebuild kits. Restore your vehicle's power and reliability.
Experience improved fuel delivery with 25% savings on all CP3 pumps. Enhance your engine's efficiency and power.
Restore precise steering with 40% off pitman arms and idler arms. Essential components for tight handling.
Improve exhaust flow and sound with 30% off select downpipes and exhaust systems. Experience enhanced performance.
Unlock more horsepower and torque with 30% off downpipes, engineered for improved exhaust flow and performance.
Ensure maximum engine integrity with 35% off head studs, providing superior clamping force for high-performance applications.
Enhance your fuel system with 25% savings on CP3 pumps. Improve fuel delivery and engine efficiency with this essential upgrade.
Restore precise steering control with 28% less on pitman arms and idler arms. Improve your vehicle's handling.
Achieve optimal fuel delivery with 25% savings on CP3 pumps and lift pumps. Enhance your engine's efficiency and power.
Upgrade your transmission's performance with 15% off Allison Transmission rebuild kits. Restore smooth shifts and reliability.
Keep your engine and transmission running smoothly with 12% savings on premium engine oil and transmission fluid.
Enhance your vehicle's safety with 40% less on premium brake rotors and brake pads.
Improve your vehicle's handling and precision with 30% off steering gear boxes and tie rods, critical components for control.
Upgrade your transmission's longevity with 15% off Allison Transmission rebuild kits.
Restore your engine's precision with 15% less on all fuel injectors. Ensure efficient fuel delivery and peak performance.
Maintain optimal engine health with 22% off premium engine oil and transmission fluid, essential for longevity.
Enhance your vehicle's handling with 30% off steering gear boxes and tie rods, providing precise control and improved road feel.
Upgrade your transmission with 15% off Allison Transmission rebuild kits. Restore peak performance and reliability to your vehicle.
Optimize your engine's breathing with 22% off cold air intakes. Achieve better combustion and increased power.
Experience improved fuel delivery with 25% savings on CP3 pumps.
Improve your engine's breathing with 22% savings on cold air intakes.
Upgrade your transmission's performance with 15% off Allison Transmission rebuild kits. Restore your vehicle's power and reliability.
Optimize your engine's cooling with 22% off intercoolers. Reduce intake air temperatures for better performance.
Experience a power boost with 25% savings on select turbochargers. Enhance your engine's output and efficiency.
Achieve peak engine performance and sound with 30% off select downpipes and exhaust systems.
Secure your engine's integrity with 22% savings on high-quality head studs and head gaskets.
Upgrade your drivetrain with 20% off Allison Transmission rebuild kits. Restore peak performance and reliability to your truck's transmission.
Experience improved fuel delivery and performance with 25% savings on all CP3 pumps.
Customer Reviews
Always reliable, just wish shipping was a touch quicker
dmaxstore always pulls through with great parts. this time i picked up some anzo switchback headlights, upgrading from my old set. compared to xdp, their selection for duramax stuff is just unbeatable and i keep coming back because of the points system they have. it’s pretty sweet getting credit for every order. usually everything arrives quickly but this last one took a bit longer than i expected to get to me. still, the install was straightforward and the discount code worked at checkout like always. definitely my go-to over diesel power products.
Good experience, mostly!
My leveling kit arrived last week and I'm really happy with the quality. Applying my rewards points at checkout was super easy, which is a nice perk since I buy a lot of parts. I just wish order tracking was a bit more prominent on their site, I had to search for it.
Got my new floor mats
My old floor mats were shot, so I got some new ones from DmaxStore. They fit perfectly in my truck, and the quality feels good. It was easy to order, and they got here pretty fast. Happy with them, my truck looks way better now.
Fair experience, one small issue
I recently purchased a set of brake rotors and pads for my Chevy truck. The ordering process was smooth, and the parts arrived well-packaged within a week. The quality of the components seems good, and they installed without any major problems. My only minor complaint is that one of the brake pad boxes was slightly crushed, though the pads themselves were undamaged. Customer service was helpful when I called to confirm fitment before buying. Overall, a solid transaction but they could improve on packaging robustness for smaller items.
Consistently good for parts
This isn't my first time ordering from DmaxStore. I needed a new set of glow plugs, and like always, they had what I needed. They're consistently reliable for Duramax parts. My order arrived in 5 days, just like past orders. I always check their site first.
DMAX Store Community Discussion
Share tips, ask questions & help fellow shoppers save more
Thinking about getting a programmer. Is it better to go with DmaxStore or XDP?
Anybody had issues returning something to DmaxStore? Got a lift pump that might not be the right fit.
Anyone used their rewards program? How does it work, like how many points do you get per dollar?
Can you use more than one discount code at checkout? Got a military discount and a newsletter signup code.
does the free shipping over $99 apply to everything? Some of these exhaust systems are pretty big.
What kind of deals do they usually have around Black Friday? Need to get a new set of injectors.
Hey, thinking of ordering a turbo rebuild kit. How long does shipping usually take to like, Illinois? Need it kinda quick.
Are the parts from DmaxStore actually legit? Like, are they genuine Duramax stuff or knock-offs?
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