$20 Off $250 / $40 Off $500 / $80 Off $1,000 - FINAL DAY! Use Promo Code: PROJECT

Make/Model Search
Make/Engine Search

Brands
Savings Central
Contact Us
Help Center

My Garage
Wish List
Order Status & Returns

Welcome
My Account

Order Status

Wish List
Savings Central
Shop by Brand
Shop Your Passion
- Shop Your Passion
- Truck / SUV
  
  Jeep®
  
  Restoration
  
  Stock Replacement
  
  Late Model Muscle
  
  Tools
  
  Gifts, Clothing, & More
  
  Circle Track
  
  Street Rod
  
  Powersports
  
  Paint & Body
  
  Marine
  
  Jr Dragster
Gift Cards
My Garage
See Our Catalogs
News & Events
Career Opportunities
Contact Us
Help Center
New Products
Shop by Make/Model
Sign In

Search Make/Model

Search Make/Engine

Sign In

Welcome
Account Dashboard
Profile
Order Status & Returns
Buy It Again
Wish List
Rewards Program
Gift Cards & Summit Bucks
Address Book
My Garage Settings
Email Preferences
Text Notifications
My Reviews
My Questions
Catalogs
Tax Exemption
Sign In

$20 Off $250 / $40 Off $500 / $80 Off $1,000 - FINAL DAY! Use Promo Code: PROJECT

Summit Racing SpeedCard - learn how to get 15% back - Get Details!

Filters

In Stock
- In Stock Items. Ships Today. (2) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- In Stock Items, Including at a Supplier. Ships In a Few Days. (4) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- All Items, Including Not In Stock (4) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Department
Part Type
- Exhaust Flange and Donut Gaskets (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- Spark Plugs (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- Valve Spring Retainers (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- Washers (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Brand
- Airflow Research (AFR) (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- AP Exhaust (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- ARP (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- Champion Spark Plugs (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Filter Options
Savings Central
- Summit Bucks (1)

Selected Filters

Home
Product Results

Availability

- In Stock Items. Ships Today. (2) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- In Stock Items, Including at a Supplier. Ships In a Few Days. (4) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- All Items, Including Not In Stock (4) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Filters
Department
Part Type
- Exhaust Flange and Donut Gaskets (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- Spark Plugs (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- Valve Spring Retainers (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- Washers (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Brand
- Airflow Research (AFR) (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- AP Exhaust (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- ARP (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- Champion Spark Plugs (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Filter Options
Savings Central
- Summit Bucks (1)

4 Results Found For "8521"

Highlight Keywords

Showing In Stock Items. Show All 4 Items.

Individual Parts

Part Groups

Results 1 - 4 of 4

AP Exhaust Exhaust Flange and Donut Gaskets 8521

AP Exhaust Exhaust Flange and Donut Gaskets 8521

AP Exhaust Exhaust Flange and Donut Gaskets 8521

Gasket, 13-15 4 Cyl. Chevrolet Spark, 1.2L Engine

Part Number: APH-8521

Not Yet Reviewed

Estimated Ship Date: Apr 20, 2026 if ordered today

...Loading

Estimated Ship Date: Apr 20, 2026 if ordered today

Champion Copper Plus Spark Plugs RCJ6Y

Champion Copper Plus Spark Plugs RCJ6Y

Champion Copper Plus Spark Plugs RCJ6Y

Spark Plug, RCJ6Y, Copper Plus, 14mm Thread, .375in. Reach, Resistor, Set

Part Number: CPN-852-1

Not Yet Reviewed

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

Airflow Research (AFR) Valve Spring Retainers 8521-1

Airflow Research (AFR) Valve Spring Retainers 8521-1

Airflow Research (AFR) Valve Spring Retainers 8521-1

MOPAR Gen3 10° 1.250 OD Steel Retainer

Part Number: AFR-8521-1

Not Yet Reviewed

Estimated Ship Date: May 28, 2026 if ordered today

...Loading

Estimated Ship Date: May 28, 2026 if ordered today

ARP Special Purpose Washers 200-8521

Made in the USA

ARP Special Purpose Washers 200-8521

ARP Special Purpose Washers 200-8521

Special Purpose Washer, Black Oxide, 7/16" ID - 3/4" OD, .120 Thickness, Pair

Part Number: ARP-200-8521

Not Yet Reviewed

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

1

Page 1 of 1

Modal Header

Contact us with questions.

Call To Order

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

Summit Racing Speedcard. Synchrony Car Care.

Summit Racing Equipment SpeedCard

Jumpstart Your Next Project!

View Details|See if you Prequalify

Stay Updated with Emails from Summit Racing

Never miss a sale on new parts, tools, and more!

= Required

First Name

Last Name

Email Address Email required

See Our Catalogs

News & Events

News & Events Home
OnAllCylinders (blog)
Calendar of Events
New Product Releases
Summit Racing News
News You Can Use
Featured Vehicles
Media Center
Sanctioning Bodies

Help

Help Center
Return Policy
Beat-A-Price Guarantee
Payment Options
Contact Us

Social

Facebook
X/Twitter
Instagram
Pinterest
YouTube
Podcast

About Summit

Corporate History
Retail Locations

My Account

Profile
Email Preferences
Order Status & Returns
Wish List
Address Book
My Reviews
My Questions
My Garage
Sign In

Career Opportunities

More

Summit Racing Credit Card
Gift Cards
Calculators & Tools
Promo Exclusions
Become an Affiliate
Summit Racing Rewards Program
Summit Racing Equipment Protection Plan

Terms of Use | Privacy and Security | Site Accessibility
Copyright 2026 by AUTOSALES, INCORPORATED
dba Summit Racing Equipment | Trademarks

Let's Build it Together^™

Modal Header