SKU: 43998630938

Tomei Valve Guide Set

Sale price$194.40 Regular price$216.00
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Ships within 48 hours · Estimated delivery Aug 21 - Aug 26

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Description

Tomei Valve Guide SetTomei Valve Guide Set Material: 5191Cn Sn P alloy Tensile strength: 590685 2 Hardness: 180230 Made from Phosphor Bronze (PBB) APPLICATION IN EX PART NO. VR38DETT SET TA309A NS01A IN Only TA309C NS01A EX Only TA309D NS01A RB26DETT SET TA309A NS05A IN Only TA309C NS05A EX Only TA309D NS05A RB25DE(T) RB20DE(T) SET TA309A NS06A IN Only TA309C NS05A EX Only TA309D NS06A SR20DE(T) (R)PS13 SET TA309A NS08A IN Only TA309B NS08A EX Only TA309D NS08A SR20DET

Tomei Valve Guide Set

Material: 5191(Cn-Sn-P alloy)

Tensile strength: 590~685(N/㎜2)

Hardness: 180~230(HB)

Made from Phosphor Bronze (PBB)

APPLICATION IN/EX PART NO.
VR38DETT SET TA309A-NS01A
IN Only TA309C-NS01A
EX Only TA309D-NS01A
RB26DETT SET TA309A-NS05A
IN Only TA309C-NS05A
EX Only TA309D-NS05A
RB25DE(T)
RB20DE(T)
SET TA309A-NS06A
IN Only TA309C-NS05A
EX Only TA309D-NS06A
SR20DE(T)
(R)PS13
SET TA309A-NS08A
IN Only TA309B-NS08A
EX Only TA309D-NS08A
SR20DET
S14,S15
SET TA309A-NS08B
IN Only TA309C-NS08A
EX Only TA309D-NS08A
CA18DE(T) SET TA309A-NS11A
IN Only TA309C-NS11A
EX Only TA309B-NS08A
4B11 SET TA309A-MT02A
IN Only TA309B-MT02A
EX Only
4G63 SET TA309A-MT01A
IN Only TA309C-MT01A
EX Only TA309D-MT01A
EJ205
EJ207
EJ255
EJ257
SET TA309A-SB01A
IN Only TA309C-SB01A
EX Only TA309D-SB01A

We chose to use Phosphor Bronze (Cn-Sn-P alloy) to make our Valve Guides, for its highly tensile and superior heat transferring ability, which is vital in high power and high RPM outputting engines. Since race engines these days require more power at higher RPM use , these engines now experience more extreme heat conditions. These conditions will increase the deterioration rate on these valve train related components. The Phosphor Bronze material has exceptionally lower friction and the best possible clearances can be maintained, which will reduce the stress on the valve train assembly, prevent seizures and cracking under high stress loads.

Still since the product will be used for extreme conditions, it will still require additional regular maintenance and periodical checks. The product can wear out faster under certain conditions. Some examples of the abnormal conditions are as follows.

■The rocker arm type assemblies will apply more lateral pressure, which will increase the wear rate. If the stem wall of the valve is rough, it will also contribute to the increased wear rate.
■Using high lift, aggressive camshafts will also increase the wear rate.
■Excessive buildup of carbon will also hinder performance and increase wear rate. When there's a small opening at the end, it will increase the carbon buildup rate as a funnel effect.
■The results from Valve Spring surging will cause the Valve to move on an angle. This will cause both ends to open up and create deformation. Then carbon can enter the valve guides more which will increase the wear rate.
■A defective seat cut. When the seat cut's centerline across the main 45 degree face is offline from the valve stems centerline by more than 0.01mm, this can cause increased abnormal wear rate.
■If the clearance is not within the correct 0.03-0.04mm range. The Valve will rub against the guides inner wall, this degree angle in relation to the seat cut will cause it to shift by 0.01mm more than the clearance values. The guide will take the lateral pressure point and open up the opening. The buildup of carbon will increase in the newly formed gaps.
■A worn out used Valve. It's possible to cut down by using the part that has not worn out the stem when changing to a high lift cams. The guides can wear out when the inappropriate clearances are made. (About 0.01mm out of clearance).
■The Valve design is defective. The difference from the dilatability and the guide being worn out abnormally is when the valve that is made with different alloys, will contribute with a faster deterioration.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 43998630938

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4.8 ★★★★★
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Ms. Jfuller
Waukegan, US
★★★★★ 5
Tesla 😋😉 jeep phone mount.
Bought this to go in my jeep, perfectly attached to the corner of the screen of the screen, the only down side is since my screen raises and lowers over time with the vibration of the jeep it does make the screen slide down. But the magnet holds the phone very well as long as it is aligned properly to the back of the phone. I know it say tesla mount but my choice of smart stereo for my jeep is not a flush mount, it sticks out and has a cd player in the deck. As well the screen raises and lowers for access to to the cd player. So perfect for my jeep.
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Reviewed in the United States on February 24, 2026
H
Verified Purchase
Himanshu Sukheja
Birmingham, US
★★★★★ 5
Amazing MagSafe phone stand
I recently purchased this MagSafe car phone mount, and it has been a game-changer for my daily commutes. The installation was effortless—just snap it onto the air vent, and you’re good to go. What stands out the most is the strong MagSafe connection. My phone stays securely in place even on bumpy roads, and removing it is just as seamless. The minimalist design fits perfectly with my car’s interior, and it doesn’t block my view like other bulkier mounts. Another highlight is the 360-degree rotation feature, which makes adjusting the angle for navigation or hands-free calls incredibly easy. It’s sturdy, reliable, and eliminates the need for clamps or adhesives. Overall, this is a must-have for anyone who uses their phone for GPS or music while driving. Highly recommended for MagSafe-compatible phones!
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Reviewed in the United States on December 30, 2024
C
Verified Purchase
CML
Belleville, US
★★★★★ 5
Great Phone Mount
This is a great little phone mount! Simple and effective. I’ve been wanting something for when I am pulled over at a super charger to be on a call or watching something on my phone without holding it or putting it in the cup holder. Works super well with my MagSafe case although it does come with extra magnets as well in case you don’t have a MagSafe case. Highly recommend! Easily attaches to the screen, no sticky residue or risk of sun staining on the dash like other mounts.
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Reviewed in the United States on July 2, 2025
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Verified Purchase
Lily
New York, US
★★★★★ 5
Best one so far!
This is a great device! Not my first one but definitely better than I had before! It mounts on the side of the screen, which is very convenient as my other one was sticky, so I had to leave it with my other car. The handles rotate well to give you any position that suits you. There is some good suction, so it sticks well and doesn’t fall. It’s good quality and sturdy. The phone magnets very well to it and also doesn’t fall. I rotate it any way I want but mostly vertically and diagonally. I had it for a while now so can give you my honest opinion. Highly recommend!
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Reviewed in the United States on May 30, 2025
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Amazon junkie
Lake Worth, US
★★★★★ 5
The search is over…
Style: 15W Charger
I have purchased so many mounts, but this one is perfect. It is easy to remove and apply to the screen. I don’t have to worry about damaging the screen with adhesive. The magnet is strong, and as a result, the phone is very stable. The most important benefit for me is the multiple viewing positions. The vertical placement and height are prefect. This is a quality product.
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Reviewed in the United States on February 17, 2026

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