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Home > Banks Power > Power & Efficiency Systems > PowerPack System > Banks PowerPack System 04-05 GM Duramax LLY
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Banks PowerPack System
04-05 GM Duramax LLY

Banks PowerPack System
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Gains Up To:+100 hp/+230 lb-ft

The cure for airflow restrictions.
The stock LLY is riddled with airflow bottlenecks—including the intercooler. PowerPack replaces them with free-flowing components that dramatically increase intake airflow and air density and expel exhaust with virtually no backpressure.
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GM 2004-2005 GM Duramax LLY

Colossal power stays cool, sips fuel.
All that improved airflow is then balanced with Banks’ advanced CleanTune Technology for 41% more HP and 52% more torque than stock, without adding black smoke. This is load-hauling, hill-flattening constant-duty power that keeps its cool. It’ll launch you from 0-60 mph 13 sec. quicker and from 40-60 mph 8 sec. quicker when towing. And thanks to the EconoMind's fuel savings features, you’ll get up to 19% more MPG, too. Sweet!

The Banks difference? Engineering.
Forget mis-matched components. Run away from tuners that can destroy your engine. Everything in PowerPack is engineered to work together to maximize your engine's power, efficiency and durability. PowerPack honors your vehicle by safely living within the limits of your engine and powertrain. Your Duramax will run stronger and live longer!

All gains measured at the rear wheels.
Banks IQ now included

Banks Tips
System Includes:
EconoMind® Diesel Tuner & Banks iQ
Advanced tuning for towing/work adds up to +75 hp, +170 lb-ft (rear wheels) with built-in safety, adjust-on-the-fly power and fuel savings at all levels; plus flexible touch-screen vehicle command center.
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Techni-Cooler® Intercooler System
Everything about Techni-Cooler is bigger, including the core area, which has 34% more flow volume. Increases air density for more continuous power.
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Banks Ram-Air® Intake System
Flowbench developed, dyno proven. Improves airflow up to 57%; adds up to +39 hp/+69 lb-ft more than a tuner alone! Enclosed cold-air box; huge 7-1/8" outlet.
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Monster® Diesel Duals Exhaust
4" stainless mandrel-bent system more than doubles stock flow; cuts backpressure up to 98%; lowers EGTs; rich, authoritative sound; safely clears spare tire; huge polished tips. Note: Split-duals are for single-rear wheel applications only.
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Or choose the single exhaust
Monster® Exhaust
4" stainless constant-diameter pipes and straight-thru muffler improve flow up to 176% and lower EGTs. Cuts backpressure up to 98%; rich, throaty sound.
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Or choose the dual exhaust
Monster Muffler
  • Polished-stainless with straight-through 4" diameter flow path
  • Exclusive expansion chamber dissipates annoying mid-range drone
  • Flows up to 201% better than stock
  • Authoritative, but never overpowering, exhaust sound
Product Description Below Exhaust Tip Price Order
2004-05 GM Duramax LLY PowerPack system, single exhaust | Std cab, long bed With S/S Chrome Tip
Banks Power Part #: 48989
Our Part #: BAN48989
chrome tip
Chrome Tip
$3,278.6010% off in cart
2004-05 GM Duramax LLY PowerPack system, single exhaust | Std cab, long bed With S/S Black Tip
Banks Power Part #: 48989-B
Our Part #: BAN48989-B
black tip
Black Tip
$3,278.60
10% off in cart
2004-05 GM Duramax LLY PowerPack system, single exhaust | Ext/crew cab, short bed With S/S Chrome Tip
Banks Power Part #: 48990
Our Part #: BAN48990
chrome tip
Chrome Tip
$3,288.90
10% off in cart
2004-05 GM Duramax LLY PowerPack system, single exhaust | Ext/crew cab, short bed With S/S Black Tip
Banks Power Part #: 48990-B
Our Part #: BAN48990-B
black tip
Black Tip
$3,288.90
10% off in cart
2004-05 GM Duramax LLY PowerPack system, single exhaust | Ext/crew cab, long bed With S/S Chrome Tip
Banks Power Part #: 48991
Our Part #: BAN48991
chrome tip
Chrome Tip
$3,329.07
10% off in cart
2004-05 GM Duramax LLY PowerPack system, single exhaust | Ext/crew cab, long bed With S/S Black Tip
Banks Power Part #: 48991-B
Our Part #: BAN48991-B
black tip
Black Tip
$3,329.07
10% off in cart
 
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