Motorad
Tethered

Motorad MGC935T Fuel Tank Cap

Brand Motorad MGC935T
Material Plastic
Color Black/gray
Lockable No
Type Standard
Vented Yes
Thread Diameter 1.8
Depth 1.5
Cap Depth 1.5 in
Color Black, grey
Locking No
Material Plastic
Neck Diameter 1.8 in
Tethered Yes
Product line Tethered
Fits Porsche · 69 vehicles

OE supplier quality. Built with OEM-quality materials and safety standards.

Vented design. Pressure and vacuum relief valves help control fuel vapor loss.

Tethered cap. Keeps the cap attached for easier refueling service.

Cross-references Motorad MGC935T, 9MGC935T and 4935BT for the same application. See all 5.

$35.48Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
Step 2 — Quantity
Order total $35.48
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.

Fuel Tank Cap for Porsche Applications

The Motorad MGC935T is a tethered fuel tank cap built with OEM-quality materials and safety standards. It is a standard, vented cap with pressure and vacuum relief valves to help control fuel vapor loss and maintain proper tank sealing.

Key Features

  • OE supplier manufacturing with OEM-quality materials
  • Vented design with pressure and vacuum relief valves
  • Plastic construction in black and gray
  • Tethered design for added convenience
  • Meets state and federal emissions requirements

Detailed Description

The Motorad MGC935T fuel tank cap is engineered for Porsche fitments that require a tethered, vented cap with a 1.8 in neck diameter and 1.5 in cap depth. It is listed for Porsche 718 Boxster, 718 Cayman, 718 Spyder, 911, Boxster, and Cayman applications across the 2012-2025 model years, including Porsche 718 Boxster and Porsche 911 fitments. The MGC935T is designed to help reduce evaporative fuel loss by using dedicated pressure and vacuum relief valves, while its locking-free, standard configuration keeps the design straightforward for replacement service. This part cross-references Monroe Shocks & Struts (e.g., 9MGC935T, 4935BT) for the same application.

What It Helps Address

  • Fuel vapor leakage from a worn or damaged cap
  • Check engine concerns related to evaporative emissions sealing
  • Improper tank sealing caused by a cracked or loose cap
  • Loss of pressure or vacuum control in the fuel system
  • Replacement needs for a tethered fuel tank cap on Porsche models

Installation Notes and Tips

Verify the neck diameter, tethered design, and vented configuration before installation. Confirm the cap style against the original part and inspect the sealing surface for damage or contamination. For fitment, use the vehicle-specific listings for Porsche 718 Boxster, Porsche 718 Cayman, Porsche 718 Spyder, Porsche 911, Porsche Boxster, and Porsche Cayman rather than relying on a universal match.

Quality Assurance

Motorad manufactures this cap to OEM quality standards and to pass state and federal emissions requirements. The MGC935T is produced by an OE supplier and built to support proper evaporative emissions control.

This part fits 69 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelSubmodelLitersCylindersNotes
2025Porsche718 Boxster—4.0LH6Tethered
2025Porsche718 Cayman—2.5LH4Tethered
2024Porsche718 Boxster—4.0LH6Tethered
2024Porsche718 Cayman—4.0LH6Tethered
2023Porsche718 Boxster—4.0LH6Tethered
2023Porsche718 Cayman—4.0LH6Tethered
2022Porsche718 Boxster—4.0LH6Tethered
2022Porsche718 Cayman—2.5LH4Tethered
2021Porsche718 Boxster—4.0LH6Fuel tank cap with tether, black color; Tethered
2021Porsche718 Boxster—2.5LH4Fuel tank cap with tether, black color; Tethered
2021Porsche718 Boxster—2.0LH4Fuel tank cap with tether, black color; Tethered
2021Porsche718 Cayman—4.0LH6Fuel tank cap with tether, black color; Tethered
2021Porsche718 Cayman—2.5LH4Fuel tank cap with tether, black color; Tethered
2021Porsche718 Cayman—2.0LH4Fuel tank cap with tether, black color; Tethered
2021Porsche718 Spyder—4.0LH6Fuel tank cap with tether, black color; Tethered
2020Porsche718 Boxster—2.5LH4Fuel tank cap with tether, black color; Tethered
2020Porsche718 Boxster—2.0LH4Fuel tank cap with tether, black color; Tethered
2020Porsche718 Cayman—4.0LH6Fuel tank cap with tether, black color; Tethered
2020Porsche718 Cayman—2.5LH4Fuel tank cap with tether, black color; Tethered
2020Porsche718 Cayman—2.0LH4Fuel tank cap with tether, black color; Tethered
2020Porsche718 Spyder—4.0LH6Fuel tank cap with tether, black color; Tethered
2019Porsche718 Boxster—2.5LH4Fuel tank cap with tether, black color; Tethered
2019Porsche718 Boxster—2.0LH4Fuel tank cap with tether, black color; Tethered
2019Porsche718 Cayman—2.5LH4Fuel tank cap with tether, black color; Tethered
2019Porsche718 Cayman—2.0LH4Fuel tank cap with tether, black color; Tethered
2019Porsche911—4.0LH6Fuel tank cap with tether, black color; Tethered
2019Porsche911—3.8LH6Fuel tank cap with tether, black color; Tethered
2019Porsche911—3.0LH6Fuel tank cap with tether, black color; Tethered
2018Porsche718 Boxster—2.5LH4Fuel tank cap with tether, black color; Tethered
2018Porsche718 Boxster—2.0LH4Fuel tank cap with tether, black color; Tethered
2018Porsche718 Cayman—2.5LH4Fuel tank cap with tether, black color; Tethered
2018Porsche718 Cayman—2.0LH4Fuel tank cap with tether, black color; Tethered
2018Porsche911—4.0LH6Fuel tank cap with tether, black color; Tethered
2018Porsche911—3.8LH6Fuel tank cap with tether, black color; Tethered
2018Porsche911—3.0LH6Fuel tank cap with tether, black color; Tethered
2017Porsche718 Boxster—2.5LH4Fuel tank cap with tether, black color; Tethered
2017Porsche718 Boxster—2.0LH4Fuel tank cap with tether, black color; Tethered
2017Porsche718 Cayman—2.5LH4Fuel tank cap with tether, black color; Tethered
2017Porsche718 Cayman—2.0LH4Fuel tank cap with tether, black color; Tethered
2017Porsche911—4.0LH6Fuel tank cap with tether, black color; Tethered
2017Porsche911—3.8LH6Fuel tank cap with tether, black color; Tethered
2017Porsche911—3.0LH6Fuel tank cap with tether, black color; Tethered
2016Porsche911—4.0LH6Fuel tank cap with tether, black color; Tethered
2016Porsche911—3.8LH6Fuel tank cap with tether, black color; Tethered
2016Porsche911—3.4LH6Fuel tank cap with tether, black color; Tethered
2016PorscheBoxster—3.8LH6Fuel tank cap with tether, black color; Tethered
2016PorscheBoxster—3.4LH6Fuel tank cap with tether, black color; Tethered
2016PorscheBoxster—2.7LH6Fuel tank cap with tether, black color; Tethered
2016PorscheCayman—3.8LH6Fuel tank cap with tether, black color; Tethered
2016PorscheCayman—3.4LH6Fuel tank cap with tether, black color; Tethered
2016PorscheCayman—2.7LH6Fuel tank cap with tether, black color; Tethered
2015Porsche911—3.8LH6Black Cap with Tether; without Aluminium Look; Tethered
2015Porsche911—3.4LH6Black Cap with Tether; without Aluminium Look; Tethered
2015PorscheBoxster—3.4LH6Fuel tank cap with tether, black color; Tethered
2015PorscheBoxster—2.7LH6Fuel tank cap with tether, black color; Tethered
2015PorscheCayman—3.4LH6Fuel tank cap with tether, black color; Tethered
2015PorscheCayman—2.7LH6Fuel tank cap with tether, black color; Tethered
2014Porsche911—3.8LH6Fuel tank cap with tether, black color; Tethered
2014Porsche911—3.4LH6Fuel tank cap with tether, black color; Tethered
2014PorscheBoxster—3.4LH6Fuel tank cap with tether, black color; Tethered
2014PorscheBoxster—2.7LH6Fuel tank cap with tether, black color; Tethered
2014PorscheCayman—3.4LH6Fuel tank cap with tether, black color; Tethered
2014PorscheCayman—2.7LH6Fuel tank cap with tether, black color; Tethered
2013Porsche911—3.8LH6Fuel tank cap with tether, black color; Tethered
2013Porsche911—3.4LH6Fuel tank cap with tether, black color; Tethered
2013PorscheBoxster—3.4LH6Fuel tank cap with tether, black color; Tethered
2013PorscheBoxster—2.7LH6Fuel tank cap with tether, black color; Tethered
2012Porsche911Carrera S3.8LH6Fuel tank cap with tether, black color; Tethered
2012Porsche911—3.4LH6Fuel tank cap with tether, black color; Tethered
Directly replaces or cross-references 5 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Motorad — MGC935T9MGC935T4935BT9912012410099120124101