Our Top 5 Best Sellers of the First Half of 2025

Posted by Swag Performance Parts on Jul 16th 2025

The first half of 2025 has shown that diesel enthusiasts still demand parts that deliver measurable gains in reliability, performance, and ease of installation. As such, we want to share an expanded look at our five hottest products cof the year so far, complete with key specifications and real-world benefits to help you choose the right upgrade for your truck.

1. Bosch CP3 Pump Conversion Kit for GM 6.6L LML Duramax

Swap out the failure-prone CP4 pump on your 2011–2016 Chevy/GMC 2500HD/3500HD for a rugged Bosch CP3 system rated over 30,000 psi. This kit includes:

  • Bosch CP3 pump (OEM 0445117010) pre-configured for direct bolt-in

  • Eight Bosch piezoelectric injectors (PN 0986435410) matched within ±1% flow

  • 304-grade stainless steel high-pressure rails & braided lines

  • All mounting hardware, O-rings, feed/return hoses

Key Benefits:

  • Eliminates metal-shaving contamination by removing CP4 internals

  • Maintains factory emissions compliance and works with OE lift pump

  • Restores consistent rail pressure for smoother idle and improved throttle response

  • Estimated install time: ~2–3 hours

2. Valve Cover & Cylinder Head Gasket Set with ARP Head Studs for ’07–’16 Ram 6.7L Cummins

Protect your high-boost Cummins with premium multilayer steel (MLS) head gaskets and 12-point, 12.9-grade ARP head studs torqued to 80 ft-lb. Kit Highlights:

  • MLS head gaskets rated to 2,000 psi cylinder pressure

  • 12 ARP 2000 series studs & matching nuts

  • CNC-cut valve cover gaskets with built-in oil-control lips

Key Benefits:

  • Prevent head lift and gasket leaks under extreme EGTs and boost

  • Ensures even clamping force for long life on modified or stock engines

  • Includes torque-to-yield valve cover studs for leak-free sealing

  • Straightforward 3–4 hour DIY install

3. Billet Aluminum Crankcase Ventilation Adapter for 7.3L Powerstroke

Replace the OEM plastic PCV housing with a 6061-T6 billet aluminum adapter that resists heat and warping. Specifications:

  • Black hard-anodized finish for corrosion resistance

  • O-ring sealed ports to eliminate leaks

  • Direct-bolt-in for ’99–’03 F-Series Super Duty

Key Benefits:

  • Prevents oil flooding in intercooler and intake tract

  • Improves crankcase airflow by up to 40%, reducing crankcase pressure

  • Extends intercooler life and boosts consistency under load

  • Installable in under 1 hour, no modifications needed

4. Stage 2 HX35 Turbocharger for ’94–’02 5.9L Cummins Diesel

Experience quicker spooling and higher flow with a CNC-machined 63 mm billet compressor wheel and 59.9 mm turbine wheel, centered on precision journal bearings. Features:

  • High-temp ceramic coating on turbine housing

  • Adjustable 10–20 psi wastegate actuator

  • OE-style T3 turbine housing and bolt pattern

Key Benefits:

  • Up to 15% faster boost response compared to stock HX35

  • Supports power levels beyond 450 hp with appropriate fueling

  • Bolt-on replacement—no fabrication or manifold modification

  • Ideal for both 12-valve and 24-valve applications

5. 7.3L Valve Cover Gaskets & Motorcraft Glow Plugs Kit – Super Duty

Combine routine maintenance items into one hassle-free kit: OEM-grade silicone valve cover gaskets and eight Motorcraft glow plugs (PN E6TZ9M332A) with 11 V heating elements. Kit Includes:

  • Precision-molded silicone gaskets with integrated oil dams

  • Glow plugs heat-up time: 4–6 seconds

  • All necessary seals and mounting hardware

Key Benefits:

  • Stops common 7.3L oil leaks at the valve cover

  • Restores reliable cold starts and smoother idle in cold weather

  • OEM-equivalent parts for guaranteed fit and function

  • DIY-friendly install in under 1 hour

Each of these best sellers brings proven performance gains to the table, whether you’re chasing reliability on the highway or extra spool at the track. Click the links above to explore fitment details, customer reviews, and installation guides before ordering your next upgrade or visit our homepage for more products.

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