The Outback Exhausts 3-inch DPF-back system for the Isuzu DMAX 3.0L 4JJ1 (2017–2020) delivers improved flow, a stronger exhaust note, and long-lasting 409 stainless steel construction in a direct bolt-on design. Perfect for enhancing performance while retaining factory DPF compatibility.
The Outback Exhausts 3″ DPF-back exhaust system is engineered to suit the Isuzu DMAX 3.0L 4JJ1 model from 2017 to August 2020. Constructed from mandrel-bent 409 stainless steel, this system delivers improved exhaust flow, enhanced durability, and a stronger exhaust note while remaining compliant with the factory DPF setup. At Sunshine Coast Diesel Tuning, this system is available for supply and professional installation to ensure optimal performance and reliability.
Key Features
Full 3-inch mandrel-bent 409 stainless steel construction for strength and long-term resistance to corrosion.
Direct bolt-on DPF-back system that fits the factory mounting points without modification.
Precision-welded flanges and brackets designed for accurate alignment and long service life.
Available with resonator and small muffler to produce a balanced medium exhaust note.
Designed specifically for the Isuzu 4JJ1 3.0L turbo diesel platform.
Suitable for Ute Dual Cab 4WD models from 2017 to 08/2020.
Specifications
Vehicle Make: Isuzu
Model: DMAX
Engine: 3.0L Turbo Diesel (4JJ1)
Year Range: 2017 to August 2020
System Type: 3-inch DPF-back exhaust
SKU: OE1690-S
Material: 409-grade stainless steel
Configuration: Direct bolt-on, no cutting or welding required
What’s in the Box
3-inch stainless steel engine pipe section
3-inch DPF-back mid and tail pipe sections
Resonator / small muffler (medium note option)
Required mounting brackets and hardware
Compatibility
This exhaust system is compatible exclusively with Isuzu DMAX models fitted with the 3.0L 4JJ1 engine from 2017 to August 2020. It is designed for vehicles retaining the factory Diesel Particulate Filter. Suitable for Dual Cab 4WD configurations. For modified vehicles, please confirm fitment before purchase.
Delivery & Lead Times
Outback Exhausts systems generally ship within 5–10 business days depending on stock levels. Shipping times may vary depending on location. Contact us for current availability or to arrange workshop delivery.
Professional Fitting Service on the Sunshine Coast
Sunshine Coast Diesel Tuning provides expert installation for all Outback Exhausts systems. Our technicians ensure correct alignment, mounting, sealing, and clearance checks for long-term reliability. We also offer post-install inspections to confirm the system performs at its best.
