The Enginetech EPC291 is a bulk 200 pack of valve keepers (also known as valve locks or valve spring retainer keepers) with a 1 round groove profile. Fits 1994-2023 Buick/Cadillac/Chevrolet/GMC 3.1L/3.4L/3.5L+ applications.
Important Notes
- Bulk 200 Pack for machine shops and rebuilders: covers approximately 6 complete 2-valve V8 engine rebuilds or 12 2-valve L4 rebuilds at two keepers per valve. Order additional packs for 4-valve-per-cylinder applications or higher volume.
- Two keepers per valve: keepers are split wedges that meet around the valve stem groove to form a complete collet, which locks the valve spring retainer to the stem. Always order in even quantities.
- Groove profile: matches a 1-round grooved valve stem. Keepers must match the count and shape of grooves on the valve stem exactly - a mismatch will prevent proper spring retention.
- Cross-references multiple OE and aftermarket part numbers - see the OEM Cross-References section below.
- Always verify the OE valve stem diameter, groove count, groove shape (round vs square), and cylinder head material against the original keepers being replaced before installation. Keeper profiles are application-specific and cannot be interchanged freely between engines.
Specifications
| Part Number | EPC291 |
| Product Type | Valve Keeper (Valve Lock / Spring Retainer Keeper) |
| Pack Size | 200 keepers per pack |
| Per Valve | 2 keepers required (1 pair per valve) |
| Groove Count | 1 |
| Groove Shape | Round |
| Weight | 1 lbs |
| UPC | 707473651868 |
| Country of Origin | US |
| OEM Cross-References | Elgin: EHC2783, Melling: VL760, FEL-PRO: FP1841566, FEL-PRO: VK291, SB International: 121-1085, General Motors: 10166345, Isuzu: 8101663450, Navistar: 1841566C1 |
Vehicle Fitment
- 1994 Chevrolet Cavalier 3.1L 189ci V6 OHV [VIN:T]
- 1994 Chevrolet Lumina 3.1L 189ci V6 OHV [VIN:T]
- 1994 Oldsmobile Cutlass Cruiser 3.1L 189ci V6 OHV [VIN:M]
- 1994 Pontiac Sunbird 3.1L 189ci V6 OHV [VIN:T]
- 1994-1996 Buick Regal 3.1L 189ci V6 OHV [VIN:M]
- 1994-1996 Chevrolet Beretta 3.1L 189ci V6 OHV [VIN:M]
- 1994-1996 Chevrolet Corsica 3.1L 189ci V6 OHV [VIN:M]
- 1994-1996 Oldsmobile Cutlass Ciera 3.1L 189ci V6 OHV [VIN:M]
- 1994-1997 Oldsmobile Cutlass Supreme 3.1L 189ci V6 OHV [VIN:M]
- 1994-1998 Buick Skylark 3.1L 189ci V6 OHV [VIN:M]
- 1994-1998 Oldsmobile Achieva 3.1L 189ci V6 OHV [VIN:M]
- 1994-1998 Pontiac Grand Am 3.1L 189ci V6 OHV [VIN:M]
- 1994-1999 Buick Century 3.1L 189ci V6 OHV [VIN:M]
- 1994-1999 Pontiac Grand Prix 3.1L 189ci V6 OHV [VIN:M]
- 1995-1999 Chevrolet Lumina 3.1L 189ci V6 OHV [VIN:M]
- 1995-1999 Chevrolet Monte Carlo 3.1L 189ci V6 OHV [VIN:M]
- 1996 Chevrolet Lumina APV 3.4L 207ci V6 OHV [VIN:E]
- 1996 Oldsmobile 98 3.8L 231ci V6 OHV [VIN:K]
- 1996-1997 Buick Riviera 3.8L 231ci V6 OHV [VIN:K]
- 1996-1998 Pontiac Trans Sport 3.4L 207ci V6 OHV [VIN:E]
- ...and 347 additional applications
Enginetech Valve Keepers (also called valve locks or valve spring retainer keepers) are precision-machined split wedges that lock the spring retainer onto the valve stem groove, holding the valve spring under preload and transmitting the spring force to the valve. Each valve uses two keepers that meet around the stem groove, so a single engine requires two keepers per valve (for example, a typical V8 with 16 valves requires 32 keepers). These keepers are supplied in bulk pack quantities for machine shops and rebuilders. Always verify the valve stem diameter, groove count, groove profile (round vs square), and cylinder head material against the OE specification before installation; keeper profiles are specific to each valve family and cannot be interchanged freely even between engines of similar displacement.
