Description
Motone Roswell Engine Oil Filler Cap Polished Aluminium – MMU055
Upgrade your Triumph’s engine aesthetics with the Motone Roswell Engine Oil Filler Cap. This precision-engineered replacement transforms a mundane maintenance access point into a striking design element, delivering the kind of attention to detail that separates a stock motorcycle from a truly personalized machine.
Manufactured using high-pressure die-casting from aerospace-grade aluminum, the Roswell cap achieves exceptional dimensional accuracy and surface finish quality. The multi-stage hand-polishing process creates a brilliant mirror finish that catches light beautifully, while the heat-resistant black inlay provides elegant contrast and protects the polished surface during oil changes.
Key Features
High-Pressure Die-Cast Aluminum – Premium casting process delivers superior strength and a flawless surface ideal for polishing.
Hand-Polished Mirror Finish – Multi-stage polishing process creates a brilliant, reflective surface that elevates engine bay aesthetics.
Heat-Resistant Black Inlay – Contrasting black center provides visual interest while protecting the cap during hot oil changes.
Integrated O-Ring Seal – Factory-style sealing ensures leak-free operation and proper crankcase pressure management.
Direct OEM Replacement – Drop-in fitment requires no modifications—simply remove stock cap and install.
Technical Specifications
| Material | Die-Cast Aluminum |
| Finish | Hand-Polished Mirror |
| Inlay | Heat-Resistant Black |
| Seal | Integrated O-Ring |
| Installation | Direct OEM Replacement |
| Part Number | MMU055 |
Fitment
Triumph Classic (2001-2015): Bonneville, Bonneville T100, Bonneville SE, Thruxton, Scrambler (790cc and 865cc air-cooled models)
Triumph Modern Classics (2016+): Bonneville T100, Bonneville T120, Street Twin, Street Cup, Street Scrambler, Thruxton, Thruxton R, Speed Twin, Scrambler 1200, Bobber, Speedmaster
Compatible with all Triumph Twin models from 790cc to 1200cc displacement, 2001 to present.
Installation
The Roswell cap is a direct replacement for the factory oil filler cap. Simply unscrew the stock cap and thread in the Motone replacement. The integrated O-ring provides proper sealing without additional components. Installation time: under 1 minute.
