SKU: E11025
Ferrea BMW S42/M42/M50/S50/M52/M54 Double Spring 7 Deg Pro CNC Titanium Retainer - Set of 12 (1992-2006)
Ferrea E11025 titanium retainers upgrade valve trains in BMW S42 M42 M50 S50 M52 M54 engines powering E36 E39 E46 Z3 Z4 models from 1992 to 2006. These 7 degree Pro CNC components secure double valve springs at minimal weight for smoother high RPM operation and greater durability. Engine builders select this set of 12 for dependable results in street and track builds.
Key Features
- Forged 6AL-4V Titanium: High strength at reduced weight lowers reciprocating mass and supports higher engine speeds
- CNC Machined Precision: Exact dimensions ensure drop-in fitment and perfect balance in DOHC setups
- 7 Degree Beadlock Design: Locks springs securely under high lift and pressure for reliable valve control
- Super Clean Microfinish: Reduces friction and wear to extend component life
- Pro Series Construction: Built for double spring use in performance BMW engines with 7mm stems
Product Notes
- BMW DOHC inline-six engines have 24 valves so purchase two sets for complete coverage
- Inspect valve locks and springs for compatibility prior to assembly
- Packaged securely to prevent damage during transit
Installation Notes
- Professional installation recommended.
- Requires 7mm stem diameter and double valve spring configuration
- Works with OEM or Ferrea 7 degree valve locks
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1992-1999 | BMW | 318i | E36 |
| 1992-1999 | BMW | 318is | E36 |
| 1992-1995 | BMW | 325i | E36 |
| 1992-1995 | BMW | 325is | E36 |
| 1995-1999 | BMW | M3 | E36 S50 |
| 1996-1999 | BMW | M3 | E36 S52 |
| 1996-2000 | BMW | 328i | E36 |
| 1996-2000 | BMW | Z3 | 2.8 M52 |
| 2001-2005 | BMW | 325i | E46 M54 |
| 2001-2006 | BMW | 330i | E46 M54 |
| 2001-2003 | BMW | 525i | E39 M54 |
| 2001-2006 | BMW | Z4 | 3.0i M54 |
Why Choose Ferrea?
- Proven in professional racing for decades
- High-grade materials withstand extreme conditions
- USA-made with tight tolerances for consistent results
Frequently Asked Questions
-
Q: Will this fit my 2003 BMW 330i E46?
A: Yes it fits all M54 equipped 330i models from 2001 to 2006 along with matching double springs -
Q: What material are these retainers made from?
A: Aerospace-grade 6AL-4V titanium forged then CNC machined for maximum durability and low weight around 6 grams each -
Q: What is the warranty and install process?
A: Ferrea offers a limited lifetime warranty against manufacturing defects. Install requires valve spring removal tool and verification of 7 degree locks
Shipping & Handling
- Method: UPS Ground or FedEx
- Availability: In stock - ships same or next business day
- Packaging: Protective box 6 x 4 x 2 inches
- Weight: 0.2 lbs
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