Exhaust valve Kit NISSAN 300/VG30D 3.0L DOHC/300 ZX 90-96
SKU: 59307506186

Exhaust valve Kit NISSAN 300/VG30D 3.0L DOHC/300 ZX 90-96

Sale price$296.41 Regular price$329.34
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Description

Exhaust valve Kit NISSAN 300/VG30D 3.0L DOHC/300 ZX 90-96The production of our race valves begins with a one piece forging where the valve head is forged in a slow two step process to maintain a good material flow. Then it is machined on the CNC in several stages to ensure the precision of the final dimensions. Then, we perform another thermal treatment for relaxation, followed by nitride curing (or coating process depending on the application). Finally, we perform one more grinding followed by a patented

The production of our race valves begins with a one-piece forging where the valve head is forged in a slow two-step process to maintain a good material flow.

Then it is machined on the CNC in several stages to ensure the precision of the final dimensions.

Then, we perform another thermal treatment for relaxation, followed by nitride curing (or coating process depending on the application).

Finally, we perform one more grinding followed by a patented surface finish to ensure that each valve is free of imperfections and the dimensions are precise.

With each valve design, we strive to maximize durability due to the higher resistance to fatigue and tensile strength.

Each valve tip is hardened above 52 HRc.

It is unlikely that you will find valves from our competitors with stricter dimensional tolerances than our Supertech valves.

Combine it with ready valve seats with equally strict tolerances and you will not find better sealing, better performance and easier to install solutions anywhere!

When our Superfinish coating is combined with our black nitrogen, it reduces the surface roughness to 1/3 of our chromed valve.

The end result ... unmatched performance and durability./p>

Fits: NISSAN 300/VG30D 3.0L DOHC/300 ZX 90-96

Dimensions:

Head diameter: 30.0mm (+0.5)

Stem diameter: 5.97 mm

Length: 103.70mm

Shipping Notes
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Exchange/Return Notes
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  • Final sale items are not eligible for returns or exchanges.
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SKU: 59307506186

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HalfTrac
Waukegan, US
★★★★★ 5
Our first babies favorite and longest lasting ball yet and he is fixing to be 7.
Style: Ball, Size: Medium (Pack of 2), Style: Ball, Size: Medium (Pack of 2)
Toughest ball we have found yet. Our doberman loves Chuckit! Balls especially the crunch one. He spreads all the balls and toys we have bought but these lasted the longest. The crunch and the glow in the dark are usually his pick but he has several different choices.
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Reviewed in the United States on May 24, 2026
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Helena
Waukegan, US
★★★★★ 5
For the fetch loving doggies. 🎾🦮
Color: Non Squeaky-12 Pack, Size: Medium
Well made tennis balls. Our dog loves playing fetch so these were perfect for her. Will say, if you have a dog that likes to break and chew on any toy then these will break easily with those sharp teeth. My dog just played fetch with them but my parent’s dogs chewed on them.. so theres that.
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Reviewed in the United States on February 17, 2026
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VJR
Birmingham, US
★★★★★ 5
Large dog loves these
Color: Non Squeaky-12 Pack, Size: Medium
My large dog LOVES these. Fairly sturdy quality: Have survived a fair amount of wear and tear and machine washings.
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Reviewed in the United States on April 25, 2026
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Laurie Z.
Battle Creek, US
★★★★★ 5
Sqeak lasts, holds up to lots of play
Color: Squeaky-4 Pack, Size: Medium
My dog absolutely loves these! She's a7 and she plays like a puppy with them. The squeaky lasts a long time and they hold up to a fair amount of play considering she is large. I will buy them again.
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Reviewed in the United States on August 11, 2025
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Roger
Belleville, US
★★★★★ 4
Very well made!
Color: Non Squeaky-12 Pack, Size: Medium
My dog loves these! She does tear them apart so dont think these are the Last Ones you will ever buy!
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Reviewed in the United States on January 25, 2026

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