Cosworth CNC Ported Cylinder Head 350Z/G35 VQ35DE
Cosworth CNC Ported Cylinder Head 350Z/G35 VQ35DE
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Shipping details
In-stock orders are processed within 48 hours; transit time is additional.
International orders include export processing and customs clearance. Duties, taxes and brokerage are extra; final freight charges may change after remeasurement.
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Need help with a return? Request authorization within 30 days of delivery for eligible unused, uninstalled items. See details for exclusions and applicable fees.
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Request return authorization (RMA) within 30 days of delivery for eligible items. Keep items unused and uninstalled, with original packaging and accessories. Electronics, liquids, special orders and other categories are excluded.
Email sales@frsport.com with RETURN and your order number in the subject to request an RMA. Please wait for return authorization before sending your item back.
Wrong part/size or change of mind: a 20% return processing fee applies, plus applicable shipping costs.
Original shipping is non-refundable. For orders shipped free, the actual outbound shipping cost is deducted from the refund. Return shipping is prepaid by the customer.
After payment capture, cancellations and refunds generally incur a 5% processing fee, except for our error, confirmed defects or confirmed carrier loss. The 5% and 20% fees do not stack; only the greater applicable fee applies. Store credit waives the 5% fee, but applicable return fees remain.
Missing, incorrect or transit-damaged items: report within 3 business days of receipt with photos of the product and packaging.
For defective items, contact us for help with the manufacturer's warranty process. The manufacturer decides the claim.
Specifications
Product details shared across all variants.
- Product type
- Engine Cylinder Head
- Category
- Cylinder Heads
- Item condition
- New
- Manufacturer type
- Aftermarket
- Shipping dimensions (L × W × H)
- Shipping weight
- 1.0 lb
Billable shipping weight; may include dimensional weight.
Cosworth VQ35 CNC ported cylinder heads features dyno tested and flow bench proven ports, engineered for maximum real power. Each new cylinder head is ported on a 5 axis machine to ensure consistency and perfect port shape every time. Larger intake and exhaust valve by 1mm. Cosworth CNC ported big valve cylinder heads comes complete with a performance valve job, that can rev up to 10,500 rpm. Perfrect for big turbo applications or strong normally aspirated engines. Cylinder headers are priced for the pair. Here is the list of items that are done to the cylinder head:
- CNC Ported/machine finished ports - New OE Casting
- Hand blended finish work
- Intake 19% Increased flow
- Exhaust 22% Increased flow
- 4 angle Inlet valve job
- 3 angle & radiused exhaust valve job
- Valves are lapped
- Back-Cut Inlet Valves
- Heads are ultra sonic cleaned prior to assembly
- Heads are serialized and sport a machined Cosworth log.
- +1 mm Stainless Steel Intake Valves
- +1 mm Inconel Exhaust valves
- Performance valve springs
- titanium retainers
- hardened steel springs platforms
- knife edge port divider
Vehicle Fitments:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2003 - 2008 | INFINITI | G35 | Base |
| 2007 - 2008 | INFINITI | G35 | Sport, Journey |
| 2004 - 2008 | INFINITI | G35 | X |
| 2008 | INFINITI | G35 | X Sport |
| 2005 | Nissan | 350Z | 35th Anniversary Edition |
| 2003 - 2008 | Nissan | 350Z | Base |
| 2003 - 2009 | Nissan | 350Z | Enthusiast, Touring |
| 2005 - 2009 | Nissan | 350Z | Grand Touring |
| 2007 - 2008 | Nissan | 350Z | Nismo |
| 2003 - 2005 | Nissan | 350Z | Performance |
| 2003 - 2006 | Nissan | 350Z | Track |
