Manley Severe Duty Series Stainless Steel Valves 11847-8

Write the First Review

Part Number: MAN-11847-8

$301.07

Valves, Exhaust, XH-428 Stainless, 1.900 in. Diameter, 5.522 in. Length, Chevy, Big Block, Set of 8
See More Specifications | Check the Fit

Manley Severe Duty Series Stainless Steel Valves 11847-8

Manley Severe Duty Series Stainless Steel Valves 11847-8

MAN-11847-8

Not Yet Reviewed

Part Number: MAN-11847-8

Estimated Ship Date: Oct 26, 2026

$301.07

Estimated Ship Date: Oct 26, 2026 Would you rather pick it up?

Overview

Brand:
Manufacturer's Part Number:
11847-8
Part Type:
Product Line:
Summit Racing Part Number:
MAN-11847-8
UPC:
807298053943
Valve Position:
Exhaust
Exhaust Valve Head Diameter (in.):
1.900 in.
Exhaust Valve Head Diameter (mm):
48.260mm
Exhaust Valve Stem Diameter (in.):
0.342 in.
Exhaust Valve Stem Diameter (mm):
8.69mm
Exhaust Overall Valve Length (in.):
5.522 in.
Exhaust Overall Valve Length (mm):
140.258mm
Undercut Stem:
No
Swirl-Polished:
Yes
Valve Tip Length (in.):
0.250 in.
Valve Tip Length (mm):
6.350mm
Valve Material:
XH-428 stainless steel
Lock Groove Quantity:
1-groove
Lock Groove Style:
Conventional
Approximate Weight (g):
132
Valve Head Style:
20 degree dish
Valve Seat Width (in.):
0.100 in.
Quantity:
Sold as a set of 8.

Manley Severe Duty Series Stainless Steel Valves

Manley Severe Duty series performance valves are a great choice for your high performance or race engine. All valves are made from stainless steel (intakes are NK-844; exhausts are XH-428) with chrome stems and hardened valve tips. Severe Duty series valves are made of superior materials, are fully machined and swirl polished, and are available with either undercut "Pro Flo" stems or straight stems.

Applications

 Loading...
 Loading...

Questions & Answers

Ask a Question

What type of question would you like to submit?

I have a Customer Service question
(order, shipping, returns, protection plans, etc.). Customer Service Question
- OR -
I would like to ask other customers
a question about this Product. Product Related Question
 Loading...

Reviews Write a Review

Some parts are not legal for use in California or other states with similar laws / regulations

Modal Header

Call To Order

This is a custom order part. You can order this part by Contacting Us.

CA Warning Icon

Cancer and Reproductive Harm -- www.P65Warnings.ca.gov

Email this page