My Account
My Garage
Shopping Cart
MY GARAGE Select Vehicle
MY GARAGE

Manley 12345-8 Race Master Exhaust Valves 1.590" LT1 6.2L Stainless Steel

Manufacturer

Part Number

12345-8
Sale Price

$188.69

In Stock (10+)

delivery box

Usually delivered within 2 days

Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Manley 12345-8 Race Master exhaust valves are precision-engineered performance valves designed for Chevrolet Gen V LT1 6.2L engines. These premium stainless steel valves are manufactured from XH-426 material and built for street performance and racing applications up to 8000 RPM.

Key Specifications:

  • Head Diameter: 1.590 inches
  • Stem Diameter: 8mm (0.3136 inches)
  • Overall Length: 5.205 inches
  • Tip Length: 0.160 inches
  • Margin Width: 0.075 inches
  • Seat Width: 0.100 inches
  • Underhead Angle/Radius: 25° x 7/16 inches
  • Top of Head: 18° Dish
  • Installed Height: Stock

Premium Features:

  • Chrome-plated stems for superior durability and reduced friction
  • Hardened valve tips for extended service life
  • Swirl polished finish for optimal performance
  • Fully machined with Pro Flo technology for maximum airflow
  • OEM-style radius keeper grooves for reliable operation

Manley Performance is recognized as a leading manufacturer of racing valves worldwide, known for exceptional quality and precision engineering. This set includes 8 exhaust valves, providing everything needed for a complete LT1 6.2L engine rebuild or performance upgrade.

been looking for hours locally and internet...why are you so cheap

Very easy to find products

my cart kept compounding my order? doubling it when i changed address i only need one!! i think i finally figured it out ..thanks

Aa++

quick

simple

Good prices on products. Response by email and phone.

Share icon
Return Policy
Returns are easy at THMotorsports

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy