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

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Exchange/Return Notes
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SKU: 59307506186

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Amazon Reviewer
Pawtucket, US
★★★★★ 4
Great ingredients - very strong scent
Size: 16 Fl Oz (Pack of 1)
I have really dry skin and frequent eczema so ordered this lotion to try out. I use a standard colloidal oatmeal lotion typically and it's hard to find a good lotion that doesn't have petrolatum. This one uses olive and jojoba oils instead. I ran it through a product safety app and it scored a 93/100 which is REALLY good for an eczema lotion - the only potential problematic ingredient is peppermint leaf which can be an allergen for some folks. It comes with a pump for easy use and I didn't find the lotion too greasy or oily - it seemed to absorb well. My only problem with the lotion is how strong the tea tree oil scent is - I use eczema lotion at bedtime and the smell was so strong, it was keeping me awake. If you're sensitive to tea tree oil, that could be an issue. But it's great for daytime use and has a nice, fresh scent. It's preventing the dryness and cracking on my hands that typically happens with "normal" lotions so the oat kernel flour is doing its job. As long as you don't have an aversion to a strong tea tree oil scent, this is a perfect eczema lotion. I've only ever found a handful of them that don't use petrolatum and I appreciate that this one uses plant oils instead. It works to keep the hands from drying or cracking. The price tag is on point with the other eczema lotion I use with it currently being $21 for 16 oz. Definitely recommend this if you are looking for an ingredient-safe eczema lotion.
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Reviewed in the United States on June 26, 2025
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Luling wang
Louisville, US
★★★★★ 5
Works for itchy dry skin
Size: 16 Fl Oz (Pack of 1)
Works good
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Reviewed in the United States on April 9, 2026
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Desert Rain
Chelsea, US
★★★★★ 5
Best hand cream for extreme rough hands
Size: 16 Fl Oz (Pack of 1)
My husband struggles with really rough hands and it's the best thing we've found. It does have a bit of a medicinal smell, but well worth it for the relief! Highly recommend.
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Reviewed in the United States on March 3, 2026
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Shelia
Belleville, US
★★★★★ 3
Smells like a disinfectant
Size: 16 Fl Oz (Pack of 1)
I’ve been struggling with eczema terribly this winter, scratching to the point of bruising. Nothing seems to help so I figured I’d give this a try. I will say that it does provide instant relief, but it is short lived and not worth the scent. It smells terrible and reminds me of old fashion Pine Sol. I think there are better products out there. I wouldn’t buy this again.
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Reviewed in the United States on February 25, 2026
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Kindle Customer
Cuba, US
★★★★★ 5
Help relieved the burn
Size: 16 Fl Oz (Pack of 1)
Helped to clear up skin
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Reviewed in the United States on January 26, 2026

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