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Description
Holley Cast Aluminum Timing Chain Cover w/Crank Sensor Port 21-152Overview: Holley now offers a solution to the plastic OEM timing chain covers on 1996 up Vortec Small Block Chevy engines. Our cast aluminum timing chain covers are an excellent upgrade from the OEM part, offering the superior durability of an aluminum part with improved functionality. These cast aluminum covers feature timing indicators molded into the body and are available with or without a crank sensor provision to accommodate both carbureted and
Overview:
Holley now offers a solution to the plastic OEM timing chain covers on 1996-up Vortec Small Block Chevy engines. Our cast aluminum timing chain covers are an excellent upgrade from the OEM part, offering the superior durability of an aluminum part with improved functionality.
These cast aluminum covers feature timing indicators molded into the body and are available with or without a crank sensor provision to accommodate both carbureted and EFI applications. The covers are available in two finishes; Natural Cast and Satin Black. They are packaged with a high quality gasket and E-coated mounting hardware for added corrosion resistance
Features:
- Designed as an upgrade from the plastic OEM timing chain covers on 1996-up Vortec Small Block Chevy engines - Replaces GM part numbers 10244600, 12523972, 12523973, 12558343, 12562818, & 93800970
- Excellent upgrade for Chevrolet Performance crate engines that use the plastic timing chain cover
- Available for EFI (with crank sensor provisions) and carbureted applications (without crank sensor provision, see Part Number 21-150)
- 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
- Timing indicator cast into the cover – Intended for use with 8” Vortec balancers and other popular 8” aftermarket balancers
- Accommodates both stock and aftermarket water pumps
- Includes high quality gasket, corrosion resistant E-coated hardware, and dowel pins
- Natural Cast Finish (For Satin Black Finish see Part Number 21-153)
Fitment Notes:
- Fits both Small Block Chevy (SBC) & VORTEC series Small Block Chevy applications
- Mounting holes at the 10 o'clock and 2 o'clock positions are NOT used on VORTEC series engine fitments
- Supplied Dowel pins are used on VORTEC series engines fitments ONLY, early Small Block Chevy (SBC) have dowel pins installed in the block and will not be used.
- This Timing Chain cover INCLUDES the Crank Sensor Port Provision, for models WITHOUT the CKP Provision see Part Number 21-150
- Does NOT work with Double Roller Timing Chain or Non-Roller Cam!
- Only for GAS Engines! Not for use with Bi-Fuel or CNG Applications!
Applications:
| Year | Make | Model | Engine | Fitment Notes |
|---|---|---|---|---|
| 1999-2000 | Cadillac | Escalade | 5.7L V8 350 CID | With Crank Sensor Port Provision |
| 1996-2000 | Chevrolet | C35 (Mexico Only!) | 5.7L V8 350 CID | With Crank Sensor Port Provision |
| 1996-1999 | Chevrolet | C1500 | 5.0L V8 305 CID | With Crank Sensor Port Provision |
| 1996-1999 | Chevrolet | C1500 | 5.7L V8 350 CID | With Crank Sensor Port Provision |
| 1996-1999 | Chevrolet | C1500 Suburban | 5.7L V8 350 CID | With Crank Sensor Port Provision |
| 1996-1998 | Chevrolet | C2500 | 5.0L V8 305 CID | With Crank Sensor Port Provision |
| 1996-2000 | Chevrolet | C2500 | 5.7L V8 350 CID | With Crank Sensor Port Provision |
| 1996-1999 | Chevrolet | C2500 Suburban | 5.7L V8 350 CID | With Crank Sensor Port Provision |
| 1996-2000 | Chevrolet | C3500 | 5.7L V8 350 CID | With Crank Sensor Port Provision |
| 1996-2002 | Chevrolet | Express 1500 | 5.0L V8 305 CID | With Crank Sensor Port Provision |
| 1996-2002 | Chevrolet | Express 1500 | 5.7L V8 350 CID | With Crank Sensor Port Provision |
| 1996-2002 | Chevrolet | Express 2500 | 5.0L V8 305 CID | With Crank Sensor Port Provision |
| 1996-2002 | Chevrolet | Express 2500 | 5.7L V8 350 CID | With Crank Sensor Port Provision |
| 1996-2002 | Chevrolet | Express 3500 | 5.7L V8 350 CID | With Crank Sensor Port Provision |
| 1996 | Chevrolet | G30 | 5.7L V8 350 CID | With Crank Sensor Port Provision |
| 1996-1999 | Chevrolet | K1500 | 5.0L V8 305 CID | With Crank Sensor Port Provision |
| 1996-1999 | Chevrolet | K1500 | 5.7L V8 350 CID | With Crank Sensor Port Provision |
| 1996-1999 | Chevrolet | K1500 Suburban | 5.7L V8 350 CID | With Crank Sensor Port Provision |
| 1996 | Chevrolet | K2500 | 5.0L V8 305 CID | With Crank Sensor Port Provision |
| 1996-2000 | Chevrolet | K2500 | 5.7L V8 350 CID | With Crank Sensor Port Provision |
| 1996-1999 | Chevrolet | K2500 Suburban | 5.7L V8 350 CID | With Crank Sensor Port Provision |
| 1996-2000 | Chevrolet | K3500 | 5.7L V8 350 CID | With Crank Sensor Port Provision |
| 1996-1999 | Chevrolet | P30 | 5.7L V8 350 CID | With Crank Sensor Port Provision |
| 1996-1999 | Chevrolet | Tahoe | 5.7L V8 350 CID | With Crank Sensor Port Provision |
| 2000 | Chevrolet | Tahoe Limited | 5.7L V8 350 CID | With Crank Sensor Port Provision |
| 2000 | Chevrolet | Tahoe Z71 | 5.7L V8 350 CID | With Crank Sensor Port Provision |
| 1996-2003 | Chevrolet | W3500 Tiltmaster | 5.7L V8 350 CID | With Crank Sensor Port Provision |
| 1996-2003 | Chevrolet | W4500 Tiltmaster | 5.7L V8 350 CID | With Crank Sensor Port Provision |
| 1996-1999 | GMC | C1500 | 5.0L V8 305 CID | With Crank Sensor Port Provision |
| 1996-1999 | GMC | C1500 | 5.7L V8 350 CID | With Crank Sensor Port Provision |
| 1996-1999 | GMC | C1500 Suburban | 5.7L V8 350 CID | With Crank Sensor Port Provision |
| 1996-1998 | GMC | C2500 | 5.0L V8 305 CID | With Crank Sensor Port Provision |
| 1996-2000 | GMC | C2500 | 5.7L V8 350 CID | With Crank Sensor Port Provision |
| 1996-1999 | GMC | C2500 Suburban | 5.7L V8 350 CID | With Crank Sensor Port Provision |
| 1996-2000 | GMC | C3500 | 5.7L V8 350 CID | With Crank Sensor Port Provision |
| 1996 | GMC | G3500 | 5.7L V8 350 CID | With Crank Sensor Port Provision |
| 1996-1999 | GMC | K1500 | 5.0L V8 305 CID | With Crank Sensor Port Provision |
| 1996-1999 | GMC | K1500 | 5.7L V8 350 CID | With Crank Sensor Port Provision |
| 1996-1999 | GMC | K1500 Suburban | 5.7L V8 350 CID | With Crank Sensor Port Provision |
| 1996-2000 | GMC | K2500 | 5.7L V8 350 CID | With Crank Sensor Port Provision |
| 1996-1999 | GMC | K2500 Suburban | 5.7L V8 350 CID | With Crank Sensor Port Provision |
| 1996-2000 | GMC | K3500 | 5.7L V8 350 CID | With Crank Sensor Port Provision |
| 1996-1999 | GMC | P3500 | 5.7L V8 350 CID | With Crank Sensor Port Provision |
| 1996-2002 | GMC | Savana 1500 | 5.0L V8 305 CID | With Crank Sensor Port Provision |
| 1996-2002 | GMC | Savana 1500 | 5.7L V8 350 CID | With Crank Sensor Port Provision |
| 1996-2002 | GMC | Savana 2500 | 5.0L V8 305 CID | With Crank Sensor Port Provision |
| 1996-2002 | GMC | Savana 2500 | 5.7L V8 350 CID | With Crank Sensor Port Provision |
| 1996-2002 | GMC | Savana 3500 | 5.7L V8 350 CID | With Crank Sensor Port Provision |
| 1996-2003 | GMC | W3500 Forward | 5.7L V8 350 CID | With Crank Sensor Port Provision |
| 1998-2003 | GMC | W4500 Forward | 5.7L V8 350 CID | With Crank Sensor Port Provision |
| 1996-1999 | GMC | Yukon | 5.7L V8 350 CID | With Crank Sensor Port Provision |
| 2000 | GMC | Yukon Denali | 5.7L V8 350 CID | With Crank Sensor Port Provision |
| 1996-2003 | Isuzu | NPR | 5.7L V8 350 CID | With Crank Sensor Port Provision |
| 1998-2003 | Isuzu | NPR-HD | 5.7L V8 350 CID | With Crank Sensor Port Provision |
| 2002-2004 | Workhorse | FasTrack FT1061 | 5.7L V8 350 CID | With Crank Sensor Port Provision |
| 2000-2001 | Workhorse | FasTrack FT1260 | 5.7L V8 350 CID | With Crank Sensor Port Provision |
| 2002-2005 | Workhorse | FasTrack FT1261 | 5.7L V8 350 CID | With Crank Sensor Port Provision |
| 2000-2002 | Workhorse | FasTrack FT1460 | 5.7L V8 350 CID | With Crank Sensor Port Provision |
| 2002-2005 | Workhorse | FasTrack FT1461 | 5.7L V8 350 CID | With Crank Sensor Port Provision |
| 2000-2001 | Workhorse | FasTrack FT1600 | 5.7L V8 350 CID | With Crank Sensor Port Provision |
| 2002-2005 | Workhorse | FasTrack FT1601 | 5.7L V8 350 CID | With Crank Sensor Port Provision |
| 2000-2001 | Workhorse | FasTrack FT1800 | 5.7L V8 350 CID | With Crank Sensor Port Provision |
| 2002-2004 | Workhorse | FasTrack FT1801 | 5.7L V8 350 CID | With Crank Sensor Port Provision |
| 2002-2003 | Workhorse | FasTrack FT1802 | 5.7L V8 350 CID | With Crank Sensor Port Provision |
| 2000-2005 | Workhorse | P30 | 5.7L V8 350 CID | With Crank Sensor Port Provision |
| 2001-2002 | Workhorse | P32 | 5.7L V8 350 CID | With Crank Sensor Port Provision |
| 1999-2004 | Workhorse Custom Chassis | P42 | 5.7L V8 350 CID | With Crank Sensor Port Provision |
Specs:
| Application | Small Block Chevy |
|---|---|
| Brand | Holley |
| Crank Sensor Provision | Yes |
| Emission Code | 5 |
| Engine | Chevrolet VORTEC V8 |
| Finish | Natural |
| Gaskets Included | Yes |
| Material | Aluminum |
| Mounting Hardware Included | Yes |
| Product Type | Timing Chain Cover |
| Thickness | Standard OEM |
| Warranty | Limited 90 Day |
Interchange:
| Reference Name | Reference Number |
| OEM | 10244600 |
| OEM | 12523972 |
| OEM | 12523973 |
| OEM | 12558343 |
| OEM | 12562818 |
| OEM | 93800970 |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.0 ★★★★★
Based on 13 reviews
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Product Reviews
★★★★★ 5
Perfect for sensory sensitive kids and for the pure beauty of it
Size: 2' x 6' (Natural), Color: Natural (Yellow Undertones), Size: 2' x 6' (Natural), Color: Natural (Yellow Undertones)
After speaking over the phone with the seller, I was confident in this purchase for my SPD son. They do not use harsh chemicals or dyes in the process. It is from New Zealand and the only use in Vietnam is for shipping. My son hasn't been diagnosed yet for Autism but he is in the process. He is super sensitive to all things sensory and Amazon feedback isn't the place to give specific details on his condition but I will write that when he fist touched it- which was willingly- he smiled and asked to sleep on it. When he laid down on it and I covered him- he was calm and smiling. In the pic I provided he is calm and holding his door (his obsession is doors and windows). He even set his door down to hold the fur. For other mommies and papas with spd/autistic kids you know that willingly touching a new fabric and setting down an obsessive item is huge and super encouraging!
I am so grateful to have such a quality item that is affordable for my special needs son. His older sister received one as well as is now pretending to be a sheep. Fun for everyone!
The ONLY negative is that the brand/info sticker on the pelt was a pain to get off and pulled some of the felt - not damaging it but blemishing the unity -but if the skin is down it will not be noticeable.
A super fun detail is that all of the fur is combed out but there were a few strands that were wavy and had a slight curl- I LOVED that.
There was no odor at all which is great! I expected an animal smell which is better than chlorine or dioxin which is what competitors use in their process.
There is no noticeable seam in the middle on the top where the two pelts are gathered.
I am soooo satisfied!
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Reviewed in the United States on February 13, 2016
★★★★★ 5
Exactly as described and what I needed.
Size: 2' x 6' (Natural), Color: Wolf Tipped
I have a bad back along with other medical problems. I bought this for padding in my wheelchair. Very thick, soft, flexible, everything I needed. No smell and very little shedding even initially. Arrived quickly and well packaged.
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Reviewed in the United States on January 24, 2026
★★★★★ 5
High quality sheepskin!!
Color: Natural (Yellow-white Ivory), Size: 2' x 3' (Natural), Color: Natural (Yellow-white Ivory), Size: 2' x 3' (Natural)
This sheepskin was purchased as a "chair cover" for my pets. It arrived with very nice packaging, along with detailed care instructions. The sheepskin was advertised as being"not white" online, and the company made very sure to state that the fur has an "off white/yellow" color. That was a little concerning for me, and I wasn't really sure whether it would have an off color, but it arrived exactly as described. There were no obvious discolorations, spots, or blemishes. In fact, it arrived as a soft "off white" color that is very beautiful and exquisite. The fur has a plush, even look, and there is no matting or fuzzy, "neglected teddy bear look" at all!
I actually purchased another brand to see if I could distinguish the difference between the two. This particular sheepskin is by far the better of the two purchases.
FYI: When the package was opened, there was no distinct odor. That's a huge plus!
I will admit that the size was slightly smaller than expected. It really doesn't matter much in the space I'm using it for though. My miniature Dachshund loves it!
If you're trying to find a high quality sheepskin, and you don't need to cover a very large space, this is definitely the one to buy!
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Reviewed in the United States on January 12, 2024
★★★★★ 5
The Quality of the sheepskin is awesome.
Color: Wolf Tip, Size: 2' x 3' (Natural)
This rug is a beautiful specimen of New Zealand sheep. The rug is very very soft, the rug is thick, and the brown tips are fabulous looking. All in all I'm very pleased with this purchase. The size is perfect as it measures 2' x 3'. I would buy again from this seller.
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Reviewed in the United States on July 23, 2025
★★★★★ 5
The softness and color
Color: Umber, Size: 2' x 3' (Natural)
Perfect decor for living room and bedroom
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 21, 2026