Block Off Plate for BMW N54 N55 Oil Thermostat Delete 135i 335i Z4
Upgrade your BMW’s cooling setup with this N54/N55 oil thermostat delete plate, designed to replace the factory oil thermostat and free up space for a larger aftermarket oil cooler and thermostat if you want even more cooling capacity. Crafted for performance-minded drivers, this block-off plate helps you push harder without sacrificing reliability.
Machined from solid billet T-6061 aluminum, the plate is CNC milled, anodized, and machine engraved for a durable, premium finish that complements your engine bay. It’s built to endure demanding driving conditions while delivering a clean, engineered look that enthusiasts appreciate. By removing the OEM thermostat, oil flow can be optimized for cooler, more stable temperatures under high load, helping maintain consistent oil pressure and reducing heat soak during spirited driving or track sessions.
Applications span BMW N54 and N55 engines, including popular models like the 135i, 335i, and Z4. This plate is a straightforward upgrade for those seeking improved cooling performance and a tidier engine bay while retaining compatibility with existing components and aftermarket upgrades.
Note: Please allow a small tolerance for manual measurement. We do not provide installation instructions, and professional installation is strongly recommended.
Benefits & Tips
- Lower overall oil temperatures when paired with a suitable oil cooler, helping protect engine components during high-load driving.
- A cleaner engine bay with a streamlined, purpose-built appearance that reflects a performance-focused build.
- Durable, corrosion-resistant finish thanks to CNC precision and anodized, machine-engraved detailing.
Product Specifications
- Engine compatibility: BMW N54 and N55 (135i, 335i, Z4)
- OEM part number: BM15
- Material: CNC milled billet aluminum (T-6061)
- Finish: Anodized with machine engraving
- Includes: 1 plate, 2 fittings, 3 bolts
- Origin: Mainland China
- Features: Oil thermostat delete plate to enable use of a larger aftermarket oil cooler
Package Includes
- 1 X Plate
- 2 X Fittings
- 3 X Bolts
Warnings / Reminders
- Professional installation is strongly recommended.
- No installation instructions are provided.
- Allow for slight measurement variation due to manual manufacturing processes.
Language Support
English (language support details available where applicable).
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