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Hooker BlackHeart Cat-Back Exhaust system

2009*-2019* GM Silverado/Sierra (*See Application Notes) 4.8/5.3L 3 inch to Dual 2-1/2 inch Stainless Steel Cat-Back Exhaust System

PART# 705014136RHKR

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$836.00   Suggested Retail
$751.95   Holleydays Price
Estimated shipping date: 01/15/2021
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Aggressive to moderate sound


Hooker continues to push the boundaries of performance with the BlackHeart line of exhaust products. We are proud to offer these cat-back exhaust systems for 2009*-2019* GM Silverado/Sierra (*See Application Notes) 1500 trucks. These dual, rear-exit cat-back systems are engineered to offer both premium fitment and maximum performance from your 4.8/5.3L engine


  • Max dyno gains of +17.0 HP & +21.06 LB.FT. torque (Dyno based on 2012 5.3L)
  • Converts the OE side exit exhaust to an aggressive cat back exhaust system with dual tips straight back without any modifications
  • 3" into dual 2-1/2” lightweight, 18-gauge, stainless steel construction maximizing strength and durability
  • Stainless steel, high-flow muffler for optimum performance and no drone
  • Dual 4" diameter, angle-cut, resonated exhaust tips with rolled edge and laser etched Hooker BlackHeart logo for maximum styling
  • Quality welds for strength, longevity and good looks
  • Tube geometry designed for maximum ground clearance
  • A stainless steel flex pipe is incorporated for maximum durability and eliminates any in-cabin vibrations
  • Manufacturer's limited lifetime warranty
  • Fits all ½ ton (2 & 4wd), 143.5 wheelbase trucks:
  • *2009-13 all crew cabs & ext. cab w/ 6.6 ft. bed
  • *2014-19 crew cab w/ 5.75 ft. bed & ext. cab w/ 6.6 ft. bed


Application2009-2019 GM Silverado/Sierra 4.8/5.3L
BrandHooker BlackHeart
Emission Code5
Exhaust SeriesHooker BlackHeart
Material304 Stainless Steel
Muffler TypeHigh Flow, Straight Through
Product TypeExhaust System
Sound LevelAggressive / Moderate
System TypeCat-back
Tube Diameter3" to Dual 2.5"
Tubing Diameter (in)3/2.5
Part Number705014136RHKR



This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.

Tech Resources

Fits all 1/2 ton (2 & 4wd), 143.5 wheelbase trucks *2009-2013 all crew cabs & ext. cab w/ 6.6 ft. bed *2014-2019 crew cab w/ 5.75 ft. bed & ext. cab w/ 6.6 ft. bed *Dyno based on 2012 5.3L *Fits 2009-2013 New Body *Fits 2014-2019 Classic Body


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