Evolve Performance Billet Oil Thermostat Cover Dress Up Kit - BMW N54 | N55 | S55

Add a premium touch to your BMW engine bay with the Evolve Performance Billet Oil Thermostat Cover Kit. Designed for N54, N55, and S55 engines, this CNC-machined aluminum cover is both functional and stylish. It enhances durability, resists corrosion, and gives your engine bay a refined look every enthusiast will appreciate.

Key Features & Benefits

• Material: CNC-machined from high-grade T6061 billet aluminum
  
  

• Perfect fit: Designed specifically for BMW N54, N55, and S55 engines
  
  

• Easy installation: Direct replacement, no special tools required
  
  

• Enhanced durability: Resistant to wear and heat exposure
  
  

• Premium look: Upgrades engine bay aesthetics instantly
  
  

• Includes oil adapter: 1/8 NPT adapter for added convenience
  
  

Vehicle Compatibility / Fitment

• BMW models with N54 engine (2006–2010 335i, 135i, 535i, Z4 35i and others)
  
  

• BMW models with N55 engine (2010–2015 335i, 135i, 235i, 535i, X3/X4/X5/X6 35i and others)
  
  

• BMW models with S55 engine (2014–2020 F80 M3, F82/F83 M4, F87 M2 Competition)
  
  

Technical Specifications

• Material: T6061 billet aluminum
  
  

• Finish: Anodized coating (resists corrosion, but may fade under extreme heat)
  
  

• Weight: Lightweight design, minimal additional weight
  
  

• Oil adapter: 1/8 NPT included
  
  

• Durability: Built for long-term use under engine bay conditions
  
  

Installation Information

• Tools required: Basic hand tools only
  
  

• Install time: Approximately 10–15 minutes
  
  

• Professional installation not required
  
  

• Step-by-step guide included (PDF/video available on request)
  
  

Performance Gains / Why It’s Needed

While primarily an aesthetic upgrade, the billet thermostat cover also improves durability over the stock plastic part. It adds a custom look for car shows, builds, or enthusiasts who take pride in a clean, well-presented engine bay. For high-performance BMW engines like the N54, N55, and S55, it ensures reliability while adding style.

What’s Included in the Kit

• 1x Billet oil thermostat cover
  
  

• 1x Oil adapter 1/8 NPT
  
  

• Installation hardware (if required)
  
  

Warranty & Guarantee

• Backed by Evolve Performance manufacturer warranty
  
  

• Returns accepted on unused items in original packaging
  

This kit is a popular BMW engine bay dress-up upgrade, ideal for owners seeking both performance reliability and a premium look. Pair it with other Evolve Performance BMW upgrades for a complete aesthetic and functional package.

FAQs

Q1: Will this fit my BMW 335i with the N54 engine?
Yes, it is designed to fit all N54 models including 335i, 135i, 535i, and Z4 35i.

Q2: Does the anodized finish last forever?
The anodized layer resists corrosion, but prolonged high-heat exposure may slightly fade the finish over time.

Q3: Is this just cosmetic or does it add function?
It enhances the look of your engine bay and provides better durability than the stock plastic cover.

Q4: Do I need special tools for installation?
No. It can be installed in minutes using standard hand tools.

Q5: Does it come with fittings?
Yes, it includes a 1/8 NPT oil adapter.