Home / Shop / Hooker Competition Header-Back Exhaust Systems for 1963-1974 CORVETTE - 16521HKR Systems, Header-Back, Dual, Steel, Aluminized, Split Rear Exit, Chevrolet, Kit

Hooker Competition Header-Back Exhaust Systems for 1963-1974 CORVETTE - 16521HKR Systems, Header-Back, Dual, Steel, Aluminized, Split Rear Exit, Chevrolet, Kit

SKU: HOK16521HKR

Exhaust Systems

Hooker Headers

Hooker Competition Header-Back Exhaust Systems for 1963-1974 CORVETTE - 16521HKR Systems, Header-Back, Dual, Steel, Aluminized, Split Rear Exit, Chevrolet, Kit

SKU: HOK16521HKR

Exhaust Systems

IN STOCK! Est Ship 4-7 days. This item is IN STOCK at one of our warehouses or distribution centres, the ETA is the approximate time required to prepare your order for dispatch.

We accept

Description

IMPORTANT NOTICE: Must use 2 1/4 in. offset inlet/center outlet muffler. Designed for use with Hooker Competition headers. Will not fit applications equipped with TH400 automatic transmission.

Maximize your exhaust flow and reduce back pressure. Hooker Competition header-back exhaust systems feature large-diameter, 16-gauge steel tubing for improved efficiency, less backpressure, and longer life. Each system is mandrel-bent to maintain a consistent inside diameter for maximum flow. All systems come without mufflers.

Part Type

63-82 SB Vette Exhaust Kit

Data: v4.2 - Upd: 2026-10-20 22:06:38

Specifications

Product Attributes - Brand: Hooker Headers
Product Attributes - Manufacturer's Part Number: 16521HKR
Product Attributes - Part Type: Exhaust Systems
Product Attributes - Product Line: Hooker Competition Header-Back Exhaust Systems
Product Attributes - UPC: 700414023595
Product Attributes - System Material: Steel
Product Attributes - System Style: Header-back
Product Attributes - Exhaust Type: Dual
Product Attributes - Exit Location: Split rear
Product Attributes - System Finish: Aluminized
Product Attributes - Catalytic Converter(s) Included: No
Product Attributes - Intermediate Pipe Diameter (in.): 2.25 in.
Product Attributes - Muffler Included: No
Product Attributes - Hardware Included: Yes
Product Attributes - Tailpipe Diameter (in.): 2.25 in.
Product Attributes - Tip Included: No
Product Attributes - Remanufactured: No
Product Attributes - Quantity: Sold as a kit.
Product Attributes - Notes: Must use 2 1/4 in. offset inlet/center outlet muffler. Designed for use with Hooker Competition headers. Will not fit applications equipped with TH400 automatic transmission.
Product Attributes - Special Attention: It is illegal to install parts or components that bypass, defeat, or render inoperative the manufacturers’ technology and design necessary to reduce vehicle emissions to meet state and federal Clean Air Act standards.

Reference Information

Brand Name/s	Hooker Headers
StreetFX SKU	hok16521HKR
SFX Item ID	5013476
Supplier Item Code	5013476
Manufacturer SKU	16521HKR
Manufacturer UPC	700414023595
Alternative References	HKR16521, HKR16521HKR

Compatibility

Application Data

Application Notes	Must use 2 1/4 in. offset inlet/center outlet muffler. Designed for use with Hooker Competition headers. Will not fit applications equipped with TH400 automatic transmission.
Beginning Year	1963
Body Style	Convertible
Doors	2
Drivetrain	RWD
Ending Year	1968
Engine Family	Chevy small block Gen I
Engine Size	5.3L/327
Engine Type	V8
Make	CHEVROLET
Model	CORVETTE
Submodel	BASE
Transmission	Automatic
Universal	No

Application Notes	Must use 2 1/4 in. offset inlet/center outlet muffler. Designed for use with Hooker Competition headers. Will not fit applications equipped with TH400 automatic transmission.
Beginning Year	1963
Body Style	Convertible
Doors	2
Drivetrain	RWD
Ending Year	1968
Engine Family	Chevy small block Gen I
Engine Size	5.3L/327
Engine Type	V8
Make	CHEVROLET
Model	CORVETTE
Submodel	BASE
Transmission	Manual
Universal	No

Application Notes	Must use 2 1/4 in. offset inlet/center outlet muffler. Designed for use with Hooker Competition headers. Will not fit applications equipped with TH400 automatic transmission.
Beginning Year	1963
Body Style	Coupe
Doors	2
Drivetrain	RWD
Ending Year	1968
Engine Family	Chevy small block Gen I
Engine Size	5.3L/327
Engine Type	V8
Make	CHEVROLET
Model	CORVETTE
Submodel	BASE
Transmission	Automatic
Universal	No

Application Notes	Must use 2 1/4 in. offset inlet/center outlet muffler. Designed for use with Hooker Competition headers. Will not fit applications equipped with TH400 automatic transmission.
Beginning Year	1963
Body Style	Coupe
Doors	2
Drivetrain	RWD
Ending Year	1968
Engine Family	Chevy small block Gen I
Engine Size	5.3L/327
Engine Type	V8
Make	CHEVROLET
Model	CORVETTE
Submodel	BASE
Transmission	Manual
Universal	No

Application Notes	Must use 2 1/4 in. offset inlet/center outlet muffler. Designed for use with Hooker Competition headers. Will not fit applications equipped with TH400 automatic transmission.
Beginning Year	1965
Body Style	Convertible
Doors	2
Drivetrain	RWD
Ending Year	1965
Engine Family	Chevy big block Mark IV
Engine Size	6.5L/396
Engine Type	V8
Make	CHEVROLET
Model	CORVETTE
Submodel	BASE
Transmission	Automatic
Universal	No

Application Notes	Must use 2 1/4 in. offset inlet/center outlet muffler. Designed for use with Hooker Competition headers. Will not fit applications equipped with TH400 automatic transmission.
Beginning Year	1965
Body Style	Convertible
Doors	2
Drivetrain	RWD
Ending Year	1965
Engine Family	Chevy big block Mark IV
Engine Size	6.5L/396
Engine Type	V8
Make	CHEVROLET
Model	CORVETTE
Submodel	BASE
Transmission	Manual
Universal	No

Application Notes	Must use 2 1/4 in. offset inlet/center outlet muffler. Designed for use with Hooker Competition headers. Will not fit applications equipped with TH400 automatic transmission.
Beginning Year	1965
Body Style	Coupe
Doors	2
Drivetrain	RWD
Ending Year	1965
Engine Family	Chevy big block Mark IV
Engine Size	6.5L/396
Engine Type	V8
Make	CHEVROLET
Model	CORVETTE
Submodel	BASE
Transmission	Automatic
Universal	No

Application Notes	Must use 2 1/4 in. offset inlet/center outlet muffler. Designed for use with Hooker Competition headers. Will not fit applications equipped with TH400 automatic transmission.
Beginning Year	1965
Body Style	Coupe
Doors	2
Drivetrain	RWD
Ending Year	1965
Engine Family	Chevy big block Mark IV
Engine Size	6.5L/396
Engine Type	V8
Make	CHEVROLET
Model	CORVETTE
Submodel	BASE
Transmission	Manual
Universal	No

Application Notes	Must use 2 1/4 in. offset inlet/center outlet muffler. Designed for use with Hooker Competition headers. Will not fit applications equipped with TH400 automatic transmission.
Beginning Year	1969
Body Style	Convertible
Doors	2
Drivetrain	RWD
Ending Year	1974
Engine Family	Chevy small block Gen I
Engine Size	5.7L/350
Engine Type	V8
Make	CHEVROLET
Model	CORVETTE
Submodel	BASE
Transmission	Automatic
Universal	No

Application Notes	Must use 2 1/4 in. offset inlet/center outlet muffler. Designed for use with Hooker Competition headers. Will not fit applications equipped with TH400 automatic transmission.
Beginning Year	1969
Body Style	Convertible
Doors	2
Drivetrain	RWD
Ending Year	1974
Engine Family	Chevy small block Gen I
Engine Size	5.7L/350
Engine Type	V8
Make	CHEVROLET
Model	CORVETTE
Submodel	BASE
Transmission	Manual
Universal	No

Application Notes	Must use 2 1/4 in. offset inlet/center outlet muffler. Designed for use with Hooker Competition headers. Will not fit applications equipped with TH400 automatic transmission.
Beginning Year	1969
Body Style	Coupe
Doors	2
Drivetrain	RWD
Ending Year	1974
Engine Family	Chevy small block Gen I
Engine Size	5.7L/350
Engine Type	V8
Make	CHEVROLET
Model	CORVETTE
Submodel	BASE
Transmission	Automatic
Universal	No

Application Notes	Must use 2 1/4 in. offset inlet/center outlet muffler. Designed for use with Hooker Competition headers. Will not fit applications equipped with TH400 automatic transmission.
Beginning Year	1969
Body Style	Coupe
Doors	2
Drivetrain	RWD
Ending Year	1974
Engine Family	Chevy small block Gen I
Engine Size	5.7L/350
Engine Type	V8
Make	CHEVROLET
Model	CORVETTE
Submodel	BASE
Transmission	Manual
Universal	No

Loading compatibility information...

Keep shopping

Hooker Competition Header-Back Exhaust Systems for 1963-1974 CORVETTE - 16521HKR Systems, Header-Back, Dual, Steel, Aluminized, Split Rear Exit, Chevrolet, Kit

Hooker Competition Header-Back Exhaust Systems for 1963-1974 CORVETTE - 16521HKR Systems, Header-Back, Dual, Steel, Aluminized, Split Rear Exit, Chevrolet, Kit

Description

Part Type

Specifications

Reference Information

Compatibility

More from Hooker Headers

Hooker Exhaust Manifolds 8525HKR Manifolds, Rectangular Port, 2.5 in. Diameter Collector, Cast Iron Construction, Natural Finish, fits SBC with Straight Plugs, Pair

Hooker Aero Chamber Steel 2.25 Inch Muffler 21501HKR Muffler, Chamber, 2 1/4 in. Inlet/2 1/4 in. Outlet, Steel, Aluminized, Each

Hooker LS Turbo Exhaust Manifolds 8510HKR GM (except LS7 & LS9) - Natural Cast Finish

Hooker Competition Headers 2451-1HKR Headers, Competition, Long Tube, Steel, Ceramic Coated, Chevy, Small Block, Pair

Hooker Blackheart Exhaust Manifolds for 1984-2004 S10, 1984-1990 S15, 1991-2004 SONOMA - 71223026HKR Manifold, Blackheart, Cast Iron, Natural, Chevrolet, GMC, Small Block, LS, Pair

Hooker RacingHeart Street Stock Headers 2551-2HKR Headers, RacingHeart, Long Tube, 409 Stainless Steel, Natural, 1 3/4 in. Primary, 3/8 in. Flange, Chevy, Small Block, Angle/Straight, Pair