01-10 Duramax BD Diesel Full Bore Driver Side HD Exhaust Manifold01 10 Duramax BD Diesel 1041460 Full Bore Exhaust Manifold will restore the balance to your engines exhaust flow, reduce cylinder load and reduce exhaust gas temperatures. The factory driver side exhaust manifold in your 01 10 Duramax is pinched down to allow for steering shaft clearance that isn't even required! As a result, your exhaust flow is significantly disrupted. The BD Diesel Full Bore Exhaust Manifold addresses this issue by maintaining

5-10 LMM Duramax Up To: 85HP & 200 ft-lbs

Only fits 06-09 Dodge mega cab

Many specific kits for specific vehicles

Fast guide to  Smarty-JR 06 Features

Built from heavy-duty cast A356-T6 aluminum and powder coated with machined cooling fins

This system uses a huge 5 Inch T6 Aluminum intake tube for ultimate air flow

Lower Exhaust Gas Temperatures

1/8" NPT to 1/4" NPT bushing

it will only increase fuel volume as needed to maintain ECU requested fuel pressure

5-2016 LLY LBZ LMM LGH & LML engines

needles and backgrounds

Orifices de-burred by abrasive extrusion process that enhances both fuel flow and atomization