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Give Your CR-Z Head A Fresh Set Of Intake Valves That Hold Up
The Supertech HIVN-1050-8 is a set of eight black nitrided stainless steel intake valves engineered for the Honda LEA and L15A 1.5L SOHC engine used in the 2010-2015 Honda CR-Z. The black nitride surface treatment adds a hardened wear layer over the stainless base, giving these valves better resistance to guide wear than untreated stock valves during a head rebuild.
Key Features
- Complete set of eight black nitrided intake valves for a full engine rebuild
- Stainless steel construction with black nitride surface hardening
- Swirl polished valve heads to support consistent intake flow
- Precision ground stem for stable guide clearance
- Hardened valve tip for long term wear resistance
- Single groove retainer design compatible with OEM style springs and retainers
- 28mm standard head diameter dish face matches factory port geometry
- HIVN-1050-8 direct fit replacement, no head modification required for stock builds
Fitment Table
| Year Range | Make | Model |
|---|---|---|
| 2010-2015 | Honda | CR-Z |
Specifications
| Detail | Value |
|---|---|
| MPN | HIVN-1050-8 |
| Valve Type | Intake |
| Quantity | 8 valves |
| Head Diameter | 28mm (standard) |
| Stem Diameter | 5.48mm |
| Overall Length | 118.85mm |
| Material | Stainless steel, black nitride finish |
| Face Type | Dish |
| Groove Type | Single groove |
| Engine Codes | LEA, L15A |
| UPC | Not published by manufacturer for this set configuration |
What's Included
- 8x HIVN-1050-8 black nitrided intake valves
- Manufacturer spec sheet
About Supertech
Supertech Performance designs and manufactures valvetrain components for import and domestic engine platforms, supplying engine builders and performance shops with valves, springs, retainers, and related hardware machined to tight tolerances for both daily driven and track focused engines.
FAQ
What is the HIVN-1050-8?The HIVN-1050-8 is a set of eight black nitrided intake valves from Supertech built specifically for the Honda LEA and L15A 1.5L engine used in the 2010-2015 Honda CR-Z. The black nitride surface treatment improves wear resistance over untreated stainless valves.
Does the HIVN-1050-8 fit other Honda models with the L15A engine?This listing is verified for the CR-Z LEA/L15A application. Confirm your exact engine code before ordering if installing in another Honda model that shares part of the L15A family.
Can I reuse my stock valve springs and retainers with the HIVN-1050-8?Stock springs and retainers generally work with the HIVN-1050-8 single groove design, but a head builder should verify installed height and seat pressure during any valve job regardless of valve brand.
What coating is used on the HIVN-1050-8 valves?These valves use a black nitride surface treatment over a stainless steel base, which adds a hardened wear layer that helps the valve hold up better in the guide over time.
Is the HIVN-1050-8 a good match for a stock power CR-Z build?Yes. Many owners install black nitrided intake valves during a routine head rebuild even on stock power builds simply for the improved wear resistance over factory valves.
Does installing the HIVN-1050-8 require machining the head?No modification is required on a stock LEA/L15A head. The 28mm standard head diameter and dish face match factory port geometry, so this is a direct fit replacement.
What is the stem diameter of the HIVN-1050-8?The stem diameter is 5.48mm, matching the factory LEA/L15A valve guide specification.
How long is the HIVN-1050-8 intake valve?Each valve measures 118.85mm in overall length.
Install Instructions
- Remove the cylinder head and disassemble the valvetrain following factory service procedures
- Inspect and measure valve guides for wear before installing new valves
- Cut or verify valve seats to the correct angle and contact width for the new valve faces
- Install the HIVN-1050-8 valves and confirm smooth movement through the guides
- Reinstall springs, retainers, and seals, then set installed height and spring pressure
- Check for coil bind and retainer to seal clearance before reassembling the head
- Torque the head and valvetrain components to factory specification
- Run a leak down and compression check after break in
Supertech
Located in San Jose, California, in the heart of Silicon Valley, Supertech was born from the same fertile ground as many other innovative companies. We utilize cutting-edge technology to fuel our growth and deliver the highest performance valves and valve train components available. Why Choose Supertech? Over 30 Years of Experience: Our legacy in the industry ensures top-quality products. Superior Performance: We provide valves and valve train components specifically designed for the racing market. Versatile Applications: Ideal for various types of racing, including: Drag Racing Rally Road Racing And more! Custom Solutions: If you can't find the perfect fit, we are always willing to work with you to custom manufacture the ideal solution for your specific needs. CUTTING EDGE TECHNOLOGY Trusted by the best in the industry, Supertech is committed to leveraging the latest advancements in technology to enhance performance and reliability. Experience the difference with our prod...
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