Edelbrock Bolt Kit Cylinder Head Buick edelbrock,ede8503,8503,85347085033,ede,head,bolt,kit,edelbroc

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Description

CYL HEAD COMPONENTS

The Edelbrock #8503 bolt kit contain a complete set of the highest quality head bolts and hardened washers available. Cold-formed to ensure molecular integrity and heat treated prior to thread rolling and machining. Reduced diameter bolt heads eliminate the need for valve train removal to facilitate cylinder head re-torqueing. Hardened and parallel-ground washers are included. Rated at 170,000 p.s.i.

Additional Information

CYLINDER HEAD BOLT KIT BUICK

Application Summary

Buick:Big-Block:400 (6.6L)/430 (7.0L)/455 (7.5L)

Part Type

Engine Cylinder Head Bolt Set

Product Overview

Features and Benefits

Manufactured By ARP

Product Details

Description:	Cylinder Head Bolt Kit
Engine Make/Size:	Buick 400-455
Finish:	Black Oxide
Grade Type:	Performance
Head Drive Type:	Hex
Length:	(4) 2.25 in, (4) 4.00 in, (12) 4.25
Material:	Chromoly
Minimum Length:	2.25
Part Number:	ede8503
Quantity:	Kit
RGL:	WARNING: This product can expose you to Chromium, which is known to the State of California to cause cancer or birth defects or other reproductive harm. For more information, visit www.P65warnings.ca.gov.
Thread Diameter:	0.50
Thread Type:	Coarse
Washers Included:	Yes

Additional Application Notes
• Incl. Washers; For Use w/Cylinder Head PN[60039/60049]
• Incl. Washers; For Use w/Cylinder Head PN[60039/60049] Incl. Washers For Use w/Cylinder Head PN[60039/60049]

These additional application notes are supplied by the manufacturer and collated from multiple year ranges. Not all of these notes may apply to every year or every variant. Please contact a StreetFX agent for clarification if required.

Data: v2 - Desc: v4.1 - Upd: 2025-10-08 20:09:12

Features

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s	Edelbrock
StreetFX SKU	ede8503
SFX Item ID	4236405
Accounting SKU	ede-8503
Manufacturer SKU	8503
Manufacturer UPC	85347085033
Alternative References	EDL-8503

Specifications

Cylinder Head Bolts, Hex Head, Washers, for Use On Edelbrock Performer RPM Heads, Buick, 6.6L, 7.0L, 7.5L, Kit

Manufactured by ARP, Edelbrock head bolt kits contain a complete set of the highest quality head bolts and hardened washers available. They are cold-formed to ensure molecular integrity and heat-treated prior to thread rolling and machining. Reduced-diameter bolt heads eliminate the need for valvetrain removal to facilitate cylinder head re-torquing. Hardened and parallel-ground washers are included, and they're rated at 170,000 psi.

Product Attributes
Brand	Edelbrock
Manufacturer's Part Number	8503
Part Type	Cylinder Head Fasteners
Product Line	Edelbrock Head Bolt Kits
UPC	085347085033
Fastener Style	Bolt
Undercut Stud	No
Head Style	Hex
Fastener Material	Chromoly
Fastener Color	Black
Washers Included	Yes
Washer Style	Flat
Quantity	Sold as a kit.

compatibility

Edelbrock Bolt Kit Cylinder Head Buick
Year Range	Make	Model	Submodels	Region
1971-1973	Buick	Centurion	Base	US
1973-1974	Buick	Century	Base, Luxus	US
1967-1974	Buick	Electra	Base, Custom, 225, 225 Custom, 225 Limited	US
1970-1974	Buick	Estate Wagon	Base	US
1968-1969	Buick	GS 400	Base	US
1970-1972	Buick	GS 455	Base, GSX	US
1967	Buick	Gran Sport	Base	US
1970-1974	Buick	LeSabre	Base, Custom, Luxus	US
1973-1974	Buick	Regal	Base	US
1967-1974	Buick	Riviera	Base, Gran Sport	US
1967-1968	Buick	Skylark	Base, Custom	US
1970-1971	Buick	Skylark	Base, Custom	US
1968-1970	Buick	Sportwagon	Base, Custom	US
1967-1970	Buick	Wildcat	Base, Custom	US

Please note that this information serves as a fitment guide only. For specific fitment questions or clarifications, please contact us, as manufacturers may introduce variations and modifications during model year or regional revisions. While we strive to provide accurate data, fitment details may vary by region; therefore, compatibility outside the listed region and submodel variant cannot be guaranteed.

Detailed Compatibility

Application Data
Make	BUICK
Beginning Year	1967
Ending Year	1969
Engine Type	V8
Engine Family	Buick V8
Engine Size	6.6L/400
Cylinder Head Type	Edelbrock Performer RPM

Make	BUICK
Beginning Year	1967
Ending Year	1969
Engine Type	V8
Engine Family	Buick V8
Engine Size	7.0L/430
Cylinder Head Type	Edelbrock Performer RPM

Make	BUICK
Beginning Year	1970
Ending Year	1976
Engine Type	V8
Engine Family	Buick V8
Engine Size	7.5L/455
Cylinder Head Type	Edelbrock Performer RPM

This may not be an exhaustive list of compatible vehicles. Please reach out to one of our representatives if you are unsure or do not see your vehicle here.