Home / Shop / Holley Cast Aluminum Timing Covers 21-151 Covers, 1-Piece, Aluminum, Black, Chevrolet, Small Block, Without Crank Sensor, Each

Holley Cast Aluminum Timing Covers 21-151 Covers, 1-Piece, Aluminum, Black, Chevrolet, Small Block, Without Crank Sensor, Each

SKU: HLY21-151

Timing Covers

Holley

Holley Cast Aluminum Timing Covers 21-151 Covers, 1-Piece, Aluminum, Black, Chevrolet, Small Block, Without Crank Sensor, Each

SKU: HLY21-151

Timing Covers

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

Holley cast aluminum timing covers offer a durable upgrade to the plastic OEM timing chain covers on 1996-up Vortec small block Chevy engines. These aluminum covers feature timing indicators molded into the body and are available with a natural cast or satin black finish. A quality gasket and E-coated mounting hardware for added corrosion resistance are included.

Holley cast aluminum timing cover features include:

* Available for EFI (with crank sensor provisions) and carbureted applications (without crank sensor provision)
* Includes over-molded FKM oil seal, virtually eliminating concerns of the seal spinning out at high temperatures, which is common with other aluminum timing covers
* Accommodates both stock and aftermarket water pumps

Part Type

Timing Covers

Data: v4.2 - Upd: 2026-10-16 04:07:41

Specifications

Product Attributes - Brand: Holley
Product Attributes - Manufacturer's Part Number: 21-151
Product Attributes - Part Type: Timing Covers
Product Attributes - Product Line: Holley Cast Aluminum Timing Covers
Product Attributes - UPC: 090127018491
Product Attributes - Cover Style: 1-piece
Product Attributes - Cover Material: Aluminum
Product Attributes - Cover Color: Black
Product Attributes - Cover Logo: Holley
Product Attributes - Timing Pointer Included: Yes
Product Attributes - Bolts/Studs Included: Yes
Product Attributes - Gaskets Included: Yes
Product Attributes - Remanufactured: No
Product Attributes - Quantity: Sold individually.
Product Attributes - Notes: No provision for crank sensor. Includes crankshaft seal.

Reference Information

Brand Name/s	Holley
StreetFX SKU	hly21-151
SFX Item ID	4782752
Supplier Item Code	4782752
Manufacturer SKU	21-151
Manufacturer UPC	90127018491
Alternative References	HOL21-151, 1-Piece

Compatibility

Application Data

Timing Cover Fitment	Search by engine
Make	CHEVROLET
Beginning Year	1955
Ending Year	1957
Engine Type	V8
Engine Family	Chevy small block Gen I
Engine Size	4.3L/265
Application Notes	Supplied dowel pins are not used on non-Vortec applications. No provision for crank sensor.

Timing Cover Fitment	Search by engine
Make	CHEVROLET
Beginning Year	1957
Ending Year	1967
Engine Type	V8
Engine Family	Chevy small block Gen I
Engine Size	4.6L/283
Application Notes	Supplied dowel pins are not used on non-Vortec applications. No provision for crank sensor.

Timing Cover Fitment	Search by engine
Make	CHEVROLET
Beginning Year	1958
Ending Year	1958
Engine Type	V8
Engine Family	Chevy small block Gen I
Engine Size	4.6L/283
Application Notes	Supplied dowel pins are not used on non-Vortec applications. No provision for crank sensor.

Timing Cover Fitment	Search by engine
Make	CHEVROLET
Beginning Year	1962
Ending Year	1969
Engine Type	V8
Engine Family	Chevy small block Gen I
Engine Size	5.3L/327
Application Notes	Supplied dowel pins are not used on non-Vortec applications. No provision for crank sensor.

Timing Cover Fitment	Search by engine
Make	CHEVROLET
Beginning Year	1964
Ending Year	1967
Engine Type	V8
Engine Family	Chevy small block Gen I
Engine Size	5.4L/327
Application Notes	Supplied dowel pins are not used on non-Vortec applications. No provision for crank sensor.

Timing Cover Fitment	Search by engine
Make	CHEVROLET
Beginning Year	1967
Ending Year	1969
Engine Type	V8
Engine Family	Chevy small block Gen I
Engine Size	4.9L/302
Application Notes	Supplied dowel pins are not used on non-Vortec applications. No provision for crank sensor.

Timing Cover Fitment	Search by engine
Make	CHEVROLET
Beginning Year	1967
Ending Year	2002
Engine Type	V8
Engine Family	Chevy small block Gen I
Engine Size	5.7L/350
Application Notes	Supplied dowel pins are not used on non-Vortec applications. No provision for crank sensor.

Timing Cover Fitment	Search by engine
Make	CHEVROLET
Beginning Year	1968
Ending Year	1973
Engine Type	V8
Engine Family	Chevy small block Gen I
Engine Size	5.0L/307
Application Notes	Supplied dowel pins are not used on non-Vortec applications. No provision for crank sensor.

Timing Cover Fitment	Search by engine
Make	CHEVROLET
Beginning Year	1970
Ending Year	1980
Engine Type	V8
Engine Family	Chevy small block Gen I
Engine Size	6.6L/400
Application Notes	Supplied dowel pins are not used on non-Vortec applications. No provision for crank sensor.

Timing Cover Fitment	Search by engine
Make	CHEVROLET
Beginning Year	1975
Ending Year	1976
Engine Type	V8
Engine Family	Chevy small block Gen I
Engine Size	4.3L/262
Application Notes	Supplied dowel pins are not used on non-Vortec applications. No provision for crank sensor.

Timing Cover Fitment	Search by engine
Make	CHEVROLET
Beginning Year	1976
Ending Year	2002
Engine Type	V8
Engine Family	Chevy small block Gen I
Engine Size	5.0L/305
Application Notes	Supplied dowel pins are not used on non-Vortec applications. No provision for crank sensor.

Timing Cover Fitment	Search by engine
Make	CHEVROLET
Beginning Year	1979
Ending Year	1982
Engine Type	V8
Engine Family	Chevy small block Gen I
Engine Size	4.4L/267
Application Notes	Supplied dowel pins are not used on non-Vortec applications. No provision for crank sensor.

Timing Cover Fitment	Search by engine
Make	CHEVROLET
Beginning Year	1996
Ending Year	2002
Engine Type	V8
Engine Family	Chevy small block Gen I
Engine Size	5.0L/305
Application Notes	No provision for crank sensor. Includes dowel pins for Vortec engines. Mounting holes at 2 and 10 o'clock are not used.

Timing Cover Fitment	Search by engine
Make	CHEVROLET
Beginning Year	1996
Ending Year	2002
Engine Type	V8
Engine Family	Chevy small block Gen I
Engine Size	5.7L/350
Application Notes	No provision for crank sensor. Includes dowel pins for Vortec engines. Mounting holes at 2 and 10 o'clock are not used.

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Holley Cast Aluminum Timing Covers 21-151 Covers, 1-Piece, Aluminum, Black, Chevrolet, Small Block, Without Crank Sensor, Each

Holley Cast Aluminum Timing Covers 21-151 Covers, 1-Piece, Aluminum, Black, Chevrolet, Small Block, Without Crank Sensor, Each

Description

Part Type

Specifications

Reference Information

Compatibility

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