Comp Cams 518-16 Set of 16 Metal Body Viton Valve Seals for .530"" Guide Size, 11/32"" Valve Stem"
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Comp Cams 518-16 Set of 16 Metal Body Viton Valve Seals for .530"" Guide Size, 11/32"" Valve Stem"

Product ID: 13649300
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Details

  • Material
    Viton
  • Item Diameter
    0.53 Inches
  • Brand
    Comp Cams
  • Color
    Silver
  • Nominal Outside Diameter
    0.53 Inches
📏Precision fit for .530" guide & 11/32" valve stem
⚙️Smaller OD for enhanced spring clearance
🛠️Viton material for superior durability

Description

⚡ Upgrade your engine’s heartbeat with precision-sealed power!

  • PROUDLY MADE IN USA - Quality craftsmanship you can trust, supporting domestic manufacturing
  • VEHICLE SPECIFIC FITMENT - Tailored for engines with .530" valve guides and 11/32" valve stems—no guesswork
  • OPTIMIZED CLEARANCE DESIGN - Smaller outside diameter frees up space for dual and beehive valve springs
  • PRECISION GUIDE ATTACHMENT - Requires machining for a secure, factory-level fit that outperforms O-ring seals
  • PREMIUM VITON CONSTRUCTION - Engineered for high-temp resilience and long-lasting performance

The Comp Cams 518-16 valve seals are high-performance Viton seals designed for engines with .530" valve guides and 11/32" valve stems. Featuring a smaller outside diameter for improved clearance with dual and beehive springs, these USA-made seals require machining for a precise guide fit, delivering superior durability and enhanced engine efficiency over standard O-ring seals.

Specifications

MaterialViton
Item Diameter0.53 Inches
BrandComp Cams
ColorSilver
Nominal Outside Diameter0.53 Inches
UPC036584142966 786434163893
ManufacturerCOMP Cams
Unit Count1.0 Count
Global Trade Identification Number00036584142966
Model518-16
Item Weight0.353 ounces
Country of OriginUSA
Item model number518-16
Is Discontinued By ManufacturerNo
Manufacturer Part Number518-16
OEM Part NumberN

What is the difference in these and the 529-16 they seem to fit the same guides but are twice the price
Do I need intake or exhaust seals or will this set work for both chevy 350
Will 518-16 valve seals fit ford 5.0 engine
Will these fit work with factory valves in tbi heads or not?

Reviews

M**M

Perfect fit, perfect seal

These are good quality metal clad Viton valve stem seals. The technique I use to install these is as follows:1. First remove the tension springs from each seal. The reason for this is that the springs will interfere with the installation tool.2. Lightly coat the inside of the seal with a drop of light machine oil, and a drop spread around the top of the valve guide. Avoid using grease as creates hydraulic pressure and will work against you.3. With no pressure applied, gently twist the seals to seat them to the guide. This ensures the seals are positioned correctly on the valve guide.4. Then, use a 1/2" deep well socket (3/8 drive) and tap them in with a small hammer. I emphasize "tap" them...do not attempt to pound the seals in place or you will damage the seal and possibly the guide.5. Once confirmed the seal is properly seated, reinstall the tension spring and move on to the next one.

R**

Thet worked

Once valve guides machined easily installed

A**R

great

good

R**S

worked fine

used to freshen up my motor

J**N

Valve seal

Arrived on time what I needed

C**P

Good seals but be careful installing

Good seals but be careful with the small springs when installing, had to buy a second set as i mashed a couple of springs on the first set.

D**N

Bad Info

The O.D. for these valve seals are .530, the I.D. is .525 by rough measurement with a caliper. The factory O.D. for the guides on the head are .530. .005 larger than the .525 I.D. of this seal. These valve seals do not fit factory heads. The factory guides must be cut to accept these. I wish the advertisement stated this instead of saying they are for .530 "GUIDE SIZE".

W**.

Great quality

Great part and even better price no regrets on my choice here

Common Questions

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Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

Imran F.

Very reliable shop with genuine products. Will definitely buy again!

2 weeks ago

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Comp Cams 518 16 Set Of 16 Metal Body Viton | Desertcart JORDAN