Vehicle Set: Click here to shop 2017 BMW M3 parts.

12357-8 Manley Performance Pro Flo Valves

Name: Manley Performance 12357-8 Pro Flo Valves
Brand: Manley Performance
SKU: 12357-8
Price: 517.43 USD
Availability: InStock

Manley Performance Pro Flo Valves 12357-8

Image(s) for display purposes only. Actual product may vary.

Authorized Dealer

Product: Manley Performance Pro Flo Valves

Category: Manley Performance Valves

Part Number: 12357-8

UPC: 807298105956

MSRP: $685.44

Rating:

0 Reviews

$517.43

Free Shipping (Continental US)

New with manufacturer warranty

Availability: IN STOCK (2) - LOW
SHIPS FROM MANUFACTURER
(Last checked: 06/26/2026)
Shipping times vary by Manufacturer
(Can take days or weeks, contact us for an ETA)

Have a Question?

Description:

NOTES: Manley Chevy LS-3 / L-99 (L-92 Head) 1.600in Head Diameter Pro Flo E.D. Exhaust Valves (Set of 8)

Head Diameter: 1.600 in. - Stem Diameter: 0.3136 in. - O/A Length: 5.215 in.. Manley Valve - Exhaust, Valve-L-92 E/D 1.600..

Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy: The hallmark of excellence in exhaust valve material construction.Built to Last: Featuring chrome stems and hard tips for exceptional longevity and wear resistance.Optimized Performance: Swirl polished under head areas and fully machined combustion faces improve airflow and combustion efficiency.

Features:

Ideal for Specialized Applications
Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy
The hallmark of excellence in exhaust valve material construction.Built to Last
Featuring chrome stems and hard tips for exceptional longevity and wear resistance.Optimized Performance
Swirl polished under head areas and fully machined combustion faces improve airflow and combustion efficiency.

Fitment:

Years	Make	Model	Trim
Sorry we do not have fitment information available for this part number. Contact us for any fitment questions.

View other Applications of Manley Performance Pro Flo Valves

Product Reviews:

Write a Review

Product reviews for all Manley Performance Pro Flo Valves.

There are no reviews yet.

WARNING: Cancer & Reproductive Harm www.p65warnings.ca.gov

Other Valves:

IN STOCK - LOW Ferrea F6067 Ferrea 6000 Series Exh Valve-Sets Ferrea Honda D16Z6/Y5/Y7/Y8 26mm 5.46mm 22 Deg Flo Rad Grv Stock 6000 Series Exh Valve - Set of 8 $191.14 Details
IN STOCK Ferrea F1448P Ferrea Comp Plus Int Valve - Sets Ferrea Honda B17A1/B18C1/C3 33mm 5.47mm 25 Deg S-Flo Stock Comp Plus Intake Valve - Set of 8 $256.26 Details
IN STOCK Ferrea F1519P Ferrea Super Alloy Exh Valve-Sets Ferrea Subaru EJ20 33mm 5.96mm 104.75mm 25 Deg Flo +1mm Super Alloy Exhaust Valve - Set of 8 $335.54 Details
IN STOCK - LOW Supertech FFEVI-1052S-12 Supertech Exhaust Valves Supertech Ford Falcon Barra XR6 33x5.98x105.80mm Inconel Exhaust Valve - Set of 12 (Req KPR-6T-ST) $372.72 CLEARANCE VIEW PRICE IN CART Details
IN STOCK - LOW Ferrea F6115 Ferrea 6000 Series Int Valve-Sets Ferrea Chevy SB 2.08in 11/32in 4.96in 0.25in 12 Deg S-Flo +.050 6000 Series Intake Valve - Set of 8 $206.71 Details
IN STOCK - LOW Firestone 3468 Firestone Valves Firestone Air-Rite Air Command Compressor Check Valve 1/8NPT - 1 Pack (WR17603468) $37.55 Details
IN STOCK GSC Power Division 2034-8 GSC Power Division Intake Valve Sets +1mm GSC P-D Honda B Series Vtec B16A/B17A/B18C Chrome Polished Intake Valve - 34mm Head (+1mm) - SET 8 $136.36 Details
IN STOCK GSC Power Division 2256-10 GSC Power Division Intake Valve Sets -STD GSC P-D Audi DAZA 33.9mm Head STD 104mm Long Chrome Polished Intake Valve - Set of 10 $286.96 Details

For more information on Manley Performance part number 12357-8, you can visit the official Manley Performance website.