DLC-Coated Trunnions for 1998–2020 Cummins – Superior Protection & Lubrication

Upgrade your Cummins valvetrain with DLC-Coated Trunnions designed for 1998–2020 models. Featuring a Diamond-Like Carbon (DLC) coating and an enhanced oiling design, these trunnions maintain a strong oil film between moving parts—drastically reducing friction and wear.

Why Choose Our DLC-Coated Trunnions?

• Enhanced Oiling: Improved lubrication channels help prevent metal-on-metal contact, extending service life.
• Diamond-Like Carbon Coating: Far more durable than nitriding or other subpar treatments, ensuring long-lasting performance.
• Reduced Friction & Wear: Keep your rocker arms moving smoothly, even in high-load or high-boost conditions.
• Cost-Effective Upgrade: Get the best trunnion technology at a lower price than many competitive options.

In side-by-side comparisons, OEM trunnions show noticeable wear, while our DLC-coated variants resist scuffing and galling for a consistently smoother valvetrain operation. Don’t settle for inferior coatings—step up to our DLC-Coated Trunnions and experience a higher standard of engine reliability and performance.