Description
Description
Fits
| Year | Make | Model | Engine |
| 2017-2019 | Chevrolet/GMC | 2500/3500 | 6.6L L5P Duramax |
Unlock more power with Banks’ massive 3.5″ Boost Tubes—built to flow 87% more air than stock and outsize the competition. Made from durable aluminized steel with smooth mandrel bends, these tubes improve boost pressure, deliver quicker turbo spool, and maximize horsepower. Say goodbye to restrictive 2.5″ factory pipes and weak plastic—Banks Boost Tubes are engineered for serious performance.
Part Number: 25999
Features
- Improves airflow by 87% over stock
- Flows 680 CFM vs 364 CFM stock
- Huge increase in size and flow over stock and competitors (3.5″ vs 2.5″)
- Billet venturi couplers maintain boost pressure
- Mandrel-bent aluminized steel construction
- Constant diameter tubing for the best flow
- Allow the turbocharger to spool up faster
- Spring-loaded constant tension clamps
- 5-ply heavy-duty silicone couplers
- Greater cooling capacity
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