aFe 3-1 Twisted Steel Headers for 350Z, 370Z, G35, G37, & Q60

Regular price $1,046.43 USD Sale price $1,046.43 USD Regular price $1,046.43 USD
In Stock!
SKU: afe48-36103
Product Description

The aFe 3-1 twisted steel headers have seen gains of 9hp and 11tq on a stock 350Z, which these were designed for.  Everything about this design was optimized for maximum results from length to collects to shape, etc.  These can be used on the 07+ 350Z, 370Z, and G37 with the following:


These are specifically made for the VQ35DE Engine (03-06 350Z), but they will bolt-up to the VQ35HR and VQ37VHR Engines(07+ 350z, 370Z, G37). The only difference is the flange style at between the header and test pipe. You must use VQ35DE Test Pipes or HFC’s for it to bolt up properly. 


  • Nissan 350Z & Infiniti G35 (2003, 2004, 2005, 2006, 2007, 2008)
  • Nissan 370Z & Infiniti G37 (2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019)
  • Infiniti Q60 Coupe (2014, 2015)


  • Constructed of 1-5/8" 16-gauge 304 stainless-steel primary tubing
  • Mandrel-bent for unrestricted flow
  • 3-to-1 formed collectors decrease turbulence and increase exhaust velocity
  • Optimized tube lengths improve flow and performance
  • 100% hand TIG-welded construction ensures optimal strength and durability
  • In testing, the headers produced a max gain of +9 horsepower and +11 ft. lbs. of torque verified by our in-house dyno* (tested on 2003 Nissan 350Z V6-3.5L)
  • Potential for up to +16 horsepower and +15 lbs. x ft. of torque when combined with aFe POWER's performance Y-Pipe (P/N 48-36104-YC)

To provide faster delivery and turn around time; Kami Speed ships products out from different warehouses throughout the United States. Usually averaging 1-4 business days for processing prior to shipping.

Depending on the package, we ship using different carriers according to the item's location, content, and size.

Freight truck items, will require up to 7 business days to ship due to size. i.e. hoods, trunks, body kits, etc.

All orders made after 3:00pm ET will be shipped or processed the next business day.

Orders over $500 will ship insured and over $1,000 with signature and insurance in order to guarantee delivery. Orders over $1000 may not be able to ship to a different address not listed as the billing address or confirm payment address from the form of payment used. Orders with suite numbers, different billing, or apartment numbers will require signature if valued over $100.

All international orders outside of the USA are subject to duties and taxes fees per your countries jurisdiction and determined by customs.
Kami Speed serves the right to ship using an alternative method if we see it fit, in order to expedite shipping and reduce your rate depending on product value.

In stock, non special order items can be returned within 30 days of the product arriving to your house or place of work.
Returns will NOT be accepted on Clearance Items, Final Sales, Special Orders, Opened, Installed, Incomplete, or Otherwise Used Products. In order to initiate a return, an RMA number must be requested and approved via e-mail. All returns will be subject to a 20% restocking fee minus complete shipping cost (roundtrip).

Any processed orders that have not shipped will incur a 6% cancelation refund fee unless the product was not available to ship within a timely manner. No fee will be incurred if used as store credit.

For complete details on our return policy, please see our Help and FAQ link under HELPFUL INFO.

WARNING: Operating, servicing and maintaining a passenger vehicle or off-highway motor vehicle can expose you to chemicals including engine exhaust, carbon monoxide, phthalates, and lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. To minimize exposure, avoid breathing exhaust, do not idle the engine except as necessary, service your vehicle in a well-ventilated area and wear gloves or wash your hands frequently when servicing your vehicle. For more information go to

Customer Reviews

Be the first to write a review