2025 SEMA | XDP | Heavy-Duty Starters, Alternators, And More

The annual SEMA Show in Las Vegas is always packed with innovation, and XDP (Xtreme Diesel Performance) came ready to impress. For 2025, the diesel-performance powerhouse rolled into Booth #21427 in the Central Hall with a full display of new products designed to make diesel trucks tougher, more reliable, and better equipped for the rigors of towing, off-roading, and work-truck duty. From heavy-duty gear-reduction starters to high-output alternators and improved cooling solutions, XDP’s new lineup reinforces the company’s reputation as a go-to brand for hardcore diesel enthusiasts.

HD Gear Reduction Starters: Built For Extreme Conditions

One of the biggest highlights at XDP’s 2025 SEMA booth was the company’s line of HD Gear Reduction Starters. Designed as direct replacements for factory units, these starters feature a compact, high-torque gear-reduction design that delivers faster and more reliable engine cranking—even in cold climates or high-compression, high-horsepower engines.

Example model: XDP Wrinkle Black HD Gear Reduction Starter (XD251)
Applications: 2001–2019 GM 6.6-liter Duramax
Output: ~3.0 HP / 2.2 kW
Torque: ~200 ft-lbs
Gear reduction ratio: 3.75:1
Finish: Durable wrinkle-black powder coat for corrosion resistance

These starters are ideal for enthusiasts who run large-displacement, high-compression diesel builds or trucks that see frequent off-road use. The compact design provides clearance for aftermarket headers and downpipes, while the gear-reduction internals minimize amperage draw during startup.

HD High-Output Alternators: Power For Modern Diesel Loads

XDP also showcased a new line of HD High-Output Alternators designed to support the growing electrical demands of modern diesel builds. With winches, LED lighting systems, air compressors, and inverters becoming common additions to today’s off-road and work rigs, stock alternators can’t keep up. XDP’s upgraded alternators are engineered to deliver more current while retaining factory mounting and belt alignment.

Example models:
- XD354: 2007.5–2024 Dodge/Ram 6.7-liter Cummins
- XD353: 2008–2010 Ford 6.4-liter Power Stroke
Design: Direct bolt-on replacements
Finish: Wrinkle-black housing
Output: Significantly higher amperage than OE (varies by application)
Testing: Each unit is bench-tested and supplied with a test card

For enthusiasts running dual-battery setups, plow systems, or high-draw electrical accessories, these alternators provide the extra amperage needed to maintain stable voltage—even under maximum load.

X-TRA Cool Radiators: Keeping Diesel Temps In Check

Also featured in XDP’s 2025 SEMA lineup is the company’s latest X-TRA Cool Radiator series—a collection of upgraded cooling components designed to replace and outperform factory radiators. These radiators are direct-fit units built with stronger cores and improved flow efficiency to better manage engine temps during heavy towing, performance tuning, or off-road abuse.

Applications: Popular diesel platforms (Cummins, Power Stroke, Duramax)
Construction: Reinforced aluminum core with TIG-welded end tanks
Performance: Improved cooling capacity and heat-rejection efficiency over OE units

For diesel owners pushing their trucks to the limit, these radiators deliver peace of mind by eliminating the weak spots that often cause factory radiators to fail under stress.

Additional New Offerings: Steering And Sensors

Beyond electrical and cooling products, XDP’s booth also teased new steering and sensor upgrades, expanding its catalog of reliability-focused replacement parts. These components complement the company’s existing product families—from fuel system upgrades to filtration and maintenance items—giving enthusiasts more options to keep their trucks performing at their best.

XDP’s Expanding Diesel-Performance Portfolio

With over two decades of experience in the diesel aftermarket, XDP continues to blend performance innovation with OEM-level quality. The company’s 2025 SEMA lineup reinforces that mission, catering to everyone from weekend tow-rig owners to full-blown competition builders. Whether you’re chasing reliability, improved electrical performance, or enhanced cooling, XDP’s new products prove that the brand remains a front-runner in diesel-truck performance.