Mazworx SR20DET Stage 2 Cylinder Head Service (Cylinder head: S13) None / 87mm (46.5cc) / No
Mazworx SR20DET Stage 2 Cylinder Head Service (Cylinder head: S13)
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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.
Read the shipping policyReturns
Need help with a return? Request authorization within 30 days of delivery for eligible unused, uninstalled items. See details for exclusions and applicable fees.
Read the full return policyReturn details & how to start
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.
- Category
- Car Repair & Maintenance
- Shipping dimensions (L × W × H)
This service uses customer-provided engine components. A replacement core is not included.
Provide virgin SR20DET cylinder head with matching cam caps; usable rocker arms. Confirm compatibility and condition before ordering.
The None camshaft option includes no new camshafts. Confirm cam inputs needed for final setup before ordering.
Service work and components
- Hot Tank Cleaning
- Sand Blasting
- Removal and Replacement of Oil Port Plugs
- Freeze Plug Machining
- Stage 3 CNC Porting
- CNC Combustion Chamber Machining
- Multi-Angle Valve Job
- Valve Guide Removal, Replacement, and Reaming
- Valve Seal Replacement
- Assembly
- Dual Guide Conversion and Rocker Level Setting
- Precision Surfacing
- Supertech +1mm Intake Valves
- Supertech +1mm Inconel Exhaust Valves (6mm Stem)
- Supertech Dual Spring Kit (90lbs) and Titanium Retainers
- Supertech Bronze Valve Guides
- Viton Valve Seals
- Oil Port Pipe Plugs
- OEM Valve Guides x8
- Mazworx Threaded Freeze Plugs
Confirm delivery arrangements before sending parts. Work starts only after the individual intake is approved.
Additional work and replacement parts need approval. Core credit requests require individual approval. No automatic core credit is included.
Photos show manufacturer work examples. The service uses customer-provided cores. Selected options and listed components define the supplied work.
