Mazworx QR25DE Block Stage 2 Service 89.0
Mazworx QR25DE Block Stage 2 Service
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Shipping & returns
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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 QR25DE core block: source specifies two pieces. Confirm compatibility and condition before ordering.
The service requires two core pieces. Confirm the required pieces before sending the block.
Service work and components
- Complete disassembly of the core block
- Hot tank cleaning and degreasing
- Sand blasting to remove corrosion, corrosion debris, and to achieve a satin aluminum finish
- Removal of old sleeves and installation of Darton MID sleeves made of durable ductile iron
- Resizing of cylinders and line bore using 3-axis CNC equipment to ensure precision
- Honing cylinders with a Sunnen SV-10 hone fitted with diamond tooling, performed with a torque plate to simulate cylinder head clamping
- Step decking the block surface to increase clamp force reliability and improve head gasket sealing under high boost conditions
- ARP main studs are supplied when the customer does not provide their own
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.
