High-flow diesel exhaust systems for trucks and SUVs. 4" and 5" systems, DPF-back kits, and performance upgrades for maximum power and efficiency.
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Best AP Exhaust catalytic-converter for 2021-2019 Nissan Altima Front | Direct Fit | EPA/CARB Compliant | 641623
$1,873.40
ARISTO's proprietary substrate chemistry yields highly efficient loadings for lower cost and better converter efficiency...
Best AP Exhaust catalytic-converter for 2013-2011 Chevrolet Silverado 1500 Front | Direct Fit | EPA/CARB Compliant | 645149
$2,627.16
ARISTO's proprietary substrate chemistry yields highly efficient loadings for lower cost and better converter efficiency...
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Best AP Exhaust catalytic-converter for 2009-2006 Pontiac Solstice Front | Direct Fit | EPA/CARB Compliant | 641610
$993.68
ARISTO's proprietary substrate chemistry yields highly efficient loadings for lower cost and better converter efficiency...
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Best AP Exhaust catalytic-converter for 2006-2005 Subaru Outback Rear | Direct Fit | EPA/CARB Compliant | 644199
$816.02
ARISTO's proprietary substrate chemistry yields highly efficient loadings for lower cost and better converter efficiency...
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Best AP Exhaust catalytic-converter for 2014-2016 Ford Focus Front | Direct Fit | EPA/CARB Compliant | 644172
$1,372.46
ARISTO's proprietary substrate chemistry yields highly efficient loadings for lower cost and better converter efficiency...
Best AP Exhaust catalytic-converter for 2022-2014 Ram 2500 Front | Direct Fit | EPA/CARB Compliant | 645479
$1,982.84
ARISTO's proprietary substrate chemistry yields highly efficient loadings for lower cost and better converter efficiency...
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Best DieselTech dpf-filter for 2017-2014 Freightliner Sprinter 2500 | Direct Fit | Stainless Steel | 649013
$3,666.64
Genuine OEM substrates enhance durability, upgraded stainless steel canisters improce durability and resist corrosion, precision-crafted...
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Best DieselTech catalytic-converter for 2010-2007 Dodge Ram 2500 | Direct Fit | Stainless Steel | 649015
$2,680.20
Genuine OEM substrates enhance durability, upgraded stainless steel canisters improve durability and resist corrosion, precision-crafted...
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Best AP Exhaust catalytic-converter for 2012-2011 VPG MV-1 Front | Direct Fit | EPA/CARB Compliant | 645768
$1,180.98
ARISTO's proprietary substrate chemistry yields highly efficient loadings for lower cost and better converter efficiency...
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Best AP Exhaust catalytic-converter for 2022-2017 Nissan Rogue Sport Rear | Direct Fit | EPA/CARB Compliant | 644233
$997.90
ARISTO's proprietary substrate chemistry yields highly efficient loadings for lower cost and better converter efficiency...
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Best AP Exhaust catalytic-converter for 2020-2017 Ford Fusion Rear | Direct Fit | EPA/CARB Compliant | 644219
$996.68
ARISTO's proprietary substrate chemistry yields highly efficient loadings for lower cost and better converter efficiency...
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Best AP Exhaust catalytic-converter for 2023-2011 Dodge Charger Left | Direct Fit | EPA/CARB Compliant | 644208
$1,131.52
ARISTO's proprietary substrate chemistry yields highly efficient loadings for lower cost and better converter efficiency...
Frequently Asked Questions
What size exhaust for deleted diesel?
4" is minimum for deleted diesels; 5" is ideal for heavily modified trucks. Larger diameter dramatically reduces EGT and backpressure, crucial when deleting emissions equipment. Straight-pipe or single muffler designs flow best. Note: Emissions deletion is illegal for street use.
Will bigger exhaust help my stock diesel?
Yes! Even stock diesels benefit from 4" turbo-back systems. Expect lower EGT (50-100°F drop), slightly better MPG (1-2), and improved throttle response. Gains increase dramatically with tuning. Larger exhaust is essential foundation for any diesel performance build.
Turbo-back vs DPF-back exhaust for diesel?
Turbo-back systems (from turbo to tip) provide maximum performance by reducing all backpressure. DPF-back systems (behind diesel particulate filter) maintain emissions compliance while improving flow. For stock trucks staying emissions-legal, DPF-back offers best balance of performance and legality.
How much HP does exhaust add to diesel?
On stock diesel engines, exhaust alone adds 10-20 HP. With tuning, the same exhaust supports 50-100+ HP gains by reducing EGT and backpressure. Exhaust is essential before adding power - it's not the biggest power adder itself but enables other modifications to work safely.
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