DIAMOND EYE K4168A DPF BACK EXHAUST DUAL ALUMINIZED 2016–2017 SILVERADO/SIERRA 2500/3500

Product Description

DIAMOND EYE K4168A is a 4" aluminized DPF-back, dual-exit exhaust system for 2016–2017 Chevy Silverado / GMC Sierra 2500/3500 6.6L Duramax (all cab & bed lengths). It reduces backpressure after the DPF, helping lower EGTs and sharpen throttle response while delivering a bold, split-side exit look.

Fitment years are confirmed by Diamond Eye (2016–2017). Some retailers list 2016–2018, but the manufacturer page specifies 2016 & 2017 only—use the VIN/engine RPO to verify before purchase.

Fitment Details

• Vehicle: 2016–2017 Chevrolet Silverado 2500/3500 HD 6.6L Duramax; 2016–2017 GMC Sierra 2500/3500 HD 6.6L Duramax (all cab/bed)
• System Type: 4" DPF-back, dual split-side exit (retains factory DPF & emissions equipment)
• Material: Aluminized steel
• Does NOT fit: 2018+ (per manufacturer listing); verify tip/bumper cutouts on select trims

Why Choose This System

• Mandrel-bent 4" tubing promotes smoother post-DPF flow for lower EGTs
• Dual outlets for a wider, aggressive HD look
• Bolt-on installation with included hangers and clamps

FAQ: WILL THIS PASS EMISSIONS?

This is a DPF-back system that retains your factory emissions equipment. Always follow local laws and check visual/OBD requirements in your state.

FAQ: DOES IT REQUIRE TUNING?

No tuning is required for a DPF-back system. It mounts after the particulate filter and does not alter engine controls.

FAQ: HOW LOUD IS IT?

Expect a deeper, more pronounced exhaust note at idle and acceleration with minimal in-cab drone, thanks to post-DPF placement.

Cross-Reference / Alternatives (MBRP-only)

• MBRP S6032AL 4" Filter-Back Single Side, Aluminized (2011–2019)
• MBRP S6032304 4" Filter-Back Single Side, T304 Stainless (2011–2019)
• MBRP S60360AL 5" Filter-Back Single Side, Aluminized (2011–2019)

Specifications