Michigan Motorsports Camshaft Thrust Retainer Plate Kit vs FEL-PRO ES 72856 Head Bolt Set (Pack of 2)
Overall winner: Michigan Motorsports Camshaft Thrust Retainer Plate Kit
Key Differences
Michigan Motorsports (A) is a direct GM replacement camshaft thrust retainer kit targeted at non-VVT LS engines and includes an ARP bolt kit; it has a lower listed price tier and higher average rating. Fel‑Pro (B) is an application‑specific head bolt set that meets or exceeds OE specs, includes thread sealant, and fits cylinder head/engine repair use but has mixed reports about bolt strength
Michigan Motorsports Camshaft Thrust Retainer Plate Kit
Direct GM 12589016 replacement for non-VVT LS engines. Includes ARP 134-1002 bolt kit for proper fit and upgrade. Customers note easy installation and good quality
Pros
- direct GM replacement
- easy installation
- includes ARP bolt kit
- good quality build
Cons
- limited to non-VVT LS engines
- fits specific engine variants
- no price or availability info
FEL-PRO ES 72856 Head Bolt Set (Pack of 2)
Head bolt set designed to meet OE specifications with application-specific fit and sealant on threads. Customers note good quality, proper fit, and torque validation, with some concern about bolt strength
Pros
- meets or exceeds original equipment specifications
- application-specific design for a perfect fit
- sealant on threads eliminates need for separate sealant
- validated for fit, form, and function
Cons
- mixed feedback on bolt strength in some cases
- some reports of bolts breaking in the block
Head-to-Head
| Criteria | Winner |
|---|---|
| Price | Michigan Motorsports |
| Durability | Michigan Motorsports |
| Versatility | Fel-Pro |
| User Reviews | Michigan Motorsports |