DHD's high flow manifolds drastically increase exhaust flow without any port modifications. Additional gains can be found in port matching and port blending. Our manifolds are cast from the same high Silca Iron that's become standard in the high flow manifold market. 

DHD manifolds swept back tapered inner diameter port design will accelerate exhaust gases to the turbine, lowering EGTS and making it easier for the turbo to spool quickly. 

Note: Will not work with OE stock length up pipes. Must use DHD or comparable extended length up pipe.

• Reduced Back pressure
• Improve Fuel Economy
• Lower EGT's and drive pressure
• Quicker turbo spool up
• 1/8NPT Bungs in each manifold for EGT or Drive Pressure Sensor

• Right and Left Cast Manifolds
• 2x 1/8NPT Port Plugs

Optional:

Use the Menu above to add Mahle OE Grade Manifold Gaskets and 4340 Chromoly 12pt Manifold Hardware. Up pipe hardware and Gaskets sold separately.

You will be contacted about your shipping arrangements.

Core credit returns will be accepted within 180 days of original purchase. After 180 day core credit refunds will be at the discretion of SDS. Core returns after 120 days will be issued SDS store credit only.

To return your product core for credit, fill out the Return Form. SDS will email you with an RMA number and detailed return instructions. Please wait for shipment instructions before shipping any cores, many cores will be sent directly to the manufacturer.

SDS recommends using a carrier that provides package tracking to ensure your product gets back safely and quickly. You will not be reimbursed for shipping costs incurred in shipping the core. The credit card used for the purchase of the product giving rise to the core return will be credited with the core's original invoiced value after inspection.

Please drain all fluids, if any, from the core. The core returned must be a like-for-like make, model, type and part number. Cores will not be accepted from a salvage or junkyard. Cores that have been disassembled or have missing and/or damaged major components will not receive full core credit.