Full Send Diesel Promo Codes and Coupons December 2025

Full Send Diesel

Full Send Diesel is an automotive lifestyle brand and e-commerce platform specializing in diesel truck parts, merchandise, and accessories. Founded by automotive enthusiasts, the company offers a wide range of products from performance parts to apparel, catering to diesel truck owners and enthusiasts.

fullsenddiesel.com

Today's Full Send Diesel discount codes

TOP PICK

10000 Bonus Entries

219 uses

low

worked almost 2 years ago

10000 Bonus Entries Storewide at Full Send Diesel

Exclusive Pre-Launch Offer

48 uses

low

worked over 1 year ago

Exclusive Pre-launch Offer Storewide at Full Send Diesel

Pre-entry offer

37 uses

low

worked over 1 year ago

Pre-entry Offer Storewide at Full Send Diesel

Exclusive Pre-Launch Offer

71 uses

low

worked about 1 year ago

Exclusive Pre-launch Offer Storewide at Full Send Diesel

Featured Full Send Diesel Products

FSD Ford 6R140 Billet Transmission Adaptor

FSD Billet 6R140 transmission adaptor. Precision machined in the USA. For use in custom transmission line setups for 11-19 6.7 Powerstrokes with the 6R140 transmission. Features -Billet 6061 Aluminum - Made In The USA -Dual O Ring Seal -8AN Male Bungs Full Send Diesel

USD 101.99

FSD 2003+ 2nd Gen Swap Turbo Drain Kit Manifold Flipped Up Black Braided

Looking to upgrade your turbo drain on your Dodge Cummins? Look no further then Full Send Diesels AN braided replacement. Our kit is made from only the highest quality AN hose and fittings. All of our products come with a lifetime workmanship warranty to ensure you a reliable kit that will last you a very long time. Lifetime warranty Billet AN Fittings to ensure a leak free system Durable Braided Hose

USD 113.34

Shooting Star Headliner Kit

(833)325-3250 Our all New Shooting Star Headliner Kit is now available; Delivering the best meteor shower / Shooting Star headliner kit in the industry. Featuring our High-Intensity LEDs Packed with features including Speed, Intensity, Dimming, and fire rate adjustability to fine tune your Shooting Star Headliner kit. This is a professional quality Shooting Star Kit that is built using UV-Treated Polymer Fibers which will never become brittle or yellow like many kits on the market today. With our special polymer blend we deliver the most flexible and durable fiberoptic cables in the industry. Our Kits come Standard with a Full Lifetime Warranty. Kit Contains 420 Shooting Stars to deliver the best Meteor shower effect in the industry. This kit can be used alone or in combination with our Starlight Headliner Kit available in sizes of 500pc - 1000pc - 1500pc - 2000pc to create a true Galaxy effect. Specifications: 12 Volt Power Supply XP-9 LEDS Meteor Shower Adjust Brightness Adjust Speed Different Preset Modes [Fading, Music Sync] LifeTime Warranty

USD 399.99

Kingspeed 89-98 Dodge Ram Billet Valve Cover Raw Engraved

Our billet 1 piece valve cover for the 12 valve Cummins comes with a billet oil fill cap, stainless mounting hardware and is o-ringed for a perfect seal to your cylinder head. Please add "notch for factory injection lines" in the options tab if you would like to use this cover on a truck with factory location lines.

USD 799.99

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10% off

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10% off

158 uses

low

worked about 2 years ago

10% Off Storewide at Full Send Diesel

Pre-Launch Offer

87 uses

low

worked about 1 year ago

Pre-launch Offer Storewide at Full Send Diesel

20% off

119 uses

low

worked over 2 years ago

Get 20% Off at Full Send Diesel

Pre-launch offer

17 uses

low

worked 6 months ago

Pre-launch Offer Select Items (access to Locked Site) at Full Send Diesel

More Full Send Diesel Products

S&S 2011-Current 6.7L Ford Power Stroke CP4.2 Bypass Kit Gen 2.1 Disaster Prevention Kit

New and improved Gen2.1 Disaster Prevention Kit Safeguards fuel injectors, rails, lines, and tank from CP4 debris Thoroughly validated and proven to work in real-world testing All OE-style quick connects (easy install) Fuel supply split-off 25 inches away from the CP4 pump Return filter isolates CP4 debris before it goes on to the tank Gen2.1 billet filter head accepts standard spin-on fuel filters Comes with Donaldson P550943 fuel filter (9-micron at 99% efficiency) One part number fits all years (2011+) Improves CP4 output past 3,000 RPM (see data below) Can extend the range of a truck during a CP4 failure SEMA Certified Emissions Compliant (SC-SDM01-0020) Made in the USA S&S Diesel Motorsport, the creator of the original Disaster Prevention Kit for the 6.7 Power Stroke, is at it again with a much-improved second generation kit. Since its debut in 2016, the original S&S 6.7L Power Stroke CP4 Bypass Kit (Disaster Prevention Kit) has safeguarded thousands of injectors from CP4 debris. In fact, it works so well that it has been copied by multiple opportunists within the aftermarket. Being a company founded by fuel system engineers, S&S Diesel Motorsport has the ability, and responsibility, to offer the best solutions to fuel system problems. While the original bypass kit offers really good protection from a CP4 failure, the last four years have given the S&S engineers plenty of time to discover and eliminate potential problems. The S&S Diesel Motorsport Gen2.1 6.7L Power Stroke CP4 Bypass Kit features all quick connect lines that will eliminate the need for cutting the factory supply line, which is a debris introduction point, especially if the cut is not thoroughly deburred. It also eliminates the need to use a compression fitting, which is a potential leak point. The OE-style quick connect lines also eliminate any threaded joints that are further leak points and have the potential of generating debris during install. The main task of both kits is to supply the CP4 case and the metering unit/plungers independently with clean, filtered fuel, and to reroute case fuel back to the tank. There are two major improvements in how the Gen2.1 kit accomplishes it. The Gen2.1 fuel supply is split off into two separate lines 25 inches from the CP4, which will eliminate the chance of contaminated case fuel back-feeding into the clean fuel supply line. The original bypass kit splits off within an inch of the pump, and is more susceptible to debris back-feeding, if the CP4 failure produces enough debris to clog the fuel return system. The other improvement is what happens to the debris when it exits the pump case. The Gen2.1 kit features a billet return filter head that accepts a readily-available Donaldson P550943 spin-on fuel filter which prevents debris from reaching the tank, fuel lines, and supply pump. Previously, unfortunate victims of a CP4 failure, with the good fortune of having an original bypass kit installed, would still need to drop the tank and deal with all of the debris created by the failed CP4. One would think that major improvements would come at a major price increase. Having a clear understanding of common rail diesel fuel systems, and decades of OE engineering experience, enabled the engineers at S&S to make improvements without increasing production costs. Thanks to efficient design and use of material, the S&S Diesel Motorsport Gen2.1 6.7L Power Stroke CP4 Bypass Kit (#CP4-6.7F-BP-G2.1) delivers much more value than the original, for an affordable price of $400.00 USD. There’s no longer a need to distinguish what year the truck was made, the new Gen2.1 Bypass Kit will fit 2011 and up Ford Super Duty pickup trucks with the 6.7 Power Stroke Diesel engine. For those looking to improve the debris management of their first-generation bypass kit, the S&S Gen2.1 Fuel Return Filter Assembly (#CP4-6.7F-BP-G2.1-RFA) can be purchased separately for $160.00 USD. Replacement Filter : Sold in quantities of 12 The new Gen2.1 return filter head uses the same quick connect fittings and mounting hardware as the previous Gen2 filter, which allows for an easy retrofit. S&S customers who already own a Gen2 CP4 Bypass Kit can purchase the Gen2.1 Filter Head Upgrade (CP4-6.7F-BP-G2.1-FHU) to update their kit to the Gen2.1 spec for $120.00 USD. When considering future filter changes, the Donaldson P550943 replacement filters will be much less than the previous Gen2 filters, and they can be purchased from most auto parts stores. Does it really work or is it just “Snake Oil?” Watch video series below to see what happens when we purposely fail a CP4 with the S&S Gen2.1 Disaster Prevention Kit installed.

USD 400.00

FSD 03-07 Ford 6.0L Factory Replacement Transmission Line Kit

Looking to replace your leaking transmission lines? Look no further then Full Send Diesel's braided replacements. These are made from the highest quality braided hose and AN fittings. These come with a lifetime workmanship warranty to guarantee you a product that will last. We strive to make only the highest quality products for our customers. This kit is a direct factory replacement for your 2003-2007 6.0L powerstroke. Lifetime Warranty Durable Braided Hose Billet AN Fittings Billet An Fittings Adaptor Braised Heat Sleeve 304 Stainless Steel Hose bracket Works with factory Transmission cooler

USD 399.99

FSD Universal Four Port Catch Can

FSD Universal 4-Port Billet Catch Can Designed, fabricated, and tested in-house after 8+ years of building high-horsepower street trucks, the FSD 4-Port Catch Can is the ultimate solution for managing blow-by—without the mess. Why 4 Ports? Unlike traditional 2-port cans with filter vents that clog and spray oil, our 4-port design separates inlet and outlet flow. Two inlets collect blow-by from the engine, while two dedicated vent ports allow clean drainage straight to the ground—no filters, no splatter. Universal Mounting Bracket System Includes a brushed stainless bracket system with over 1” of adjustability and multiple slots, giving you endless mounting options for tight or custom engine bays. Want A Complete Kit With Hoses? Check out FSD-CU-DIYVCHKTCC Key Features: Billet Aluminum Construction Tig Welded Boft 10AN ORB Threads (4) 10AN ORB to 10AN Adapters Integrated Billet Dipstick Drain Port Stainless Bracket Systen W/ Hardware 100% Blow-by Control – No Filters, No Spray Built. Tested. Proven. This is the last catch can you’ll ever need.

USD 299.99

XDP Wrinkle Black HD High Output Alternator 2011-2019 GM 6.6L Duramax XD350

Enhance the charging system in your 2011-2019 GM 6.6L Duramax with the XDP Wrinkle Black HD High Output Alternator XD350. While many Duramax owners upgrade their truck for performance, the charging system is often overlooked until there is an issue. Aftermarket accessories such as off-road lights, aftermarket horn kits, on-board air compressors, snowplows, stereo equipment and other electronics will overload your factory charging system and demand more than what the factory alternator can provide. The XDP HD Series High Output Alternator increases the output of your factory charging system giving you the ability to reliably run your high-draw electronics while alleviating the strain on your charging system. The XD350 features an OE style decoupler pulley that helps synchronize the serpentine belt to improve efficiency, while also reducing the noise/vibration/harshness (NVH) and increasing accessory drive component life. Each XDP HD Alternator comes with an ultra-durable wrinkle black coating and is pre-tested for an easy bolt-on installation.Features: 245 Amp Output Bolt-On Upgrade OEM Style Decoupler Pulley 100 percent Brand New, No Core! Fits: 2011-2019 GM 6.6L Duramax Warranty:Products manufactured by XDP carry a 1-Year warranty against defects in materials and craftsmanship. The Warranty is Limited to one (1) year from the date of sale and limited solely to the parts contained within the product's kit.

USD 632.95

Free gift

18 uses

low

worked 5 months ago

Free Gift Storewide (minimum Order $1) at Full Send Diesel

Giveaway entry multiplier

37 uses

low

worked 3 months ago

Giveaway Entry Multiplier Storewide at Full Send Diesel

Sustainability Score

42%

Full Send Diesel shows limited transparency regarding their environmental practices and supply chain management. While they offer some eco-friendly alternatives in their product line, their core business model promotes high-emission vehicle modifications. The company lacks clear sustainability goals and reporting. Their packaging and shipping practices show room for improvement, and there's minimal information about their manufacturing partners' labor conditions.

About Full Send Diesel

3.0 (3)

FAQs

: Full Send Diesel usually runs major sales during Black Friday, Cyber Monday, and major holidays like Memorial Day and Labor Day. They also occasionally offer flash sales throughout the year.
: Yes, Full Send Diesel offers a 10% military discount to active duty personnel and veterans with valid identification.
: The best time to purchase performance parts is during their end-of-season sales (typically late winter and late summer) and during major holiday events like Black Friday.
: Yes, their 'Full Send Rewards' program allows customers to earn points on purchases which can be redeemed for discounts on future orders.
: In the past month, Full Send Diesel has launched 0 new promo coupons for shopper discounts. This indicates that Full Send Diesel does not provide regular opportunities for customers to save money on their purchases.
: On average, Full Send Diesel provides 5 discount coupons each month. Based on historical data, the average time between Full Send Diesel coupon releases every 6 days. However, this rate depends on various factors such as seasonal promotions (Black Friday, Cyber Monday, etc.), product launches, or other marketing initiatives. To stay informed about upcoming discounts and promotions, we recommend checking Full Send Diesel website regularly, subscribing to email newsletters, and following them on social media.
: Full Send Diesel is offering no working store-wide codes, however they are also offering 10 additional discount codes with a best discount of 10% off
: terra.coupons is the #1 provider of discount codes for your favorite retailers, such as Full Send Diesel. As a crowd-sourced platform for coupon codes, we accurate codes for over 10,000 stores. Save time and avoid expired codes by checking terra.coupons for the latest Full Send Diesel discount codes.

Curated by

Aleksa P.

Deal Curator

Last updated December 2025

Aleksa is a deal finder from the tech-savvy city of Austin, Texas. A keen coder by day and a discount guru by night, Aleksa checks back regularly to update you with new deals.

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From the blog

2025-04-29