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This is a rock solid muffler that will increase your fuel economy by a minimum of 3% guaranteed! This muffler also yields in quicker acceleration due to the better air flow design. The HF-1051 muffler will easily replace your stock muffler and does so without increasing exhaust noise.
FITMENT: The HF-1051 will fit in the place of any 5" Diameter in/out 10"x51" muffler. This means it is universal and will fit on most Heavy Duty trucks on the road.
DUAL STACKS? - It is easy to use the HF-1051 muffler on a truck with dual stacks. The only rule is that you must buy 2 mufflers otherwise you will have serious back pressure issues.
Use less fuel and improve your company's bottom line!
IMPORTANT NOTE: Fuel economy gains have not been tested on light duty applications, thus are not guaranteed for these applications. If fitting on a light duty diesel, measure the clearances on your truck to ensure you will have room to fit this muffler.
- ManufacturerGrand Rock
- Standard 5" In / Out, 10" x 44.5" Body, 51" Overall Length
- 3% Minimum Gain in MPG Guaranteed!
- Bolt In Design for Easy Installation
- Heavy Gauge, 100% Welded Construction
- No Turbo Lag, Faster Acceleration
- Replaces Stock 10" Diameter Mufflers
- HIGHEST CFM Flow of ANY Muffler
- Quiet as a Stock 10" Diameter Muffler (Driving and Acceleration ONLY, Not Engine Braking)
- Meets Federal and California Sound Levels
- Works on All Engines (ISX, 3406E, 14LSeries 60, Etc.)
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