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Motorad T158 Engine Coolant Reservoir Cap
Engine Coolant Reservoir Cap for OE Fitment
The Motorad Standard T158 engine coolant reservoir cap is built for vehicles that use a cam-on style cap with a 1.50 in filler neck outside diameter. It is a black, round plastic cap with indicator markings and a standard design for open and closed cooling systems.
Fits 2015-2016 Hyundai Genesis, N/A; Fits 2015-2019 Hyundai Sonata, N/A; Fits 2016-2020 Kia Optima, N/A; Fits 2017-2020 Genesis G80, N/A; Fits 2017-2022 Genesis G90, N/A; Fits 2017-2020 Kia Cadenza, N/A; Fits 2019-2020 Kia K900, N/A; Fits 2023 Hyundai Nexo, N/A; Fits 2022-2023 Genesis G80, N/A.
Key Features
- Motorad Standard line engine coolant reservoir cap
- Part number T158
- Plastic construction with black finish
- Cam-on attachment type for secure installation
- Round cap design with indicator markings
- Standard cap for open and closed cooling systems
- Designed without venting, pressure release lever, or quick pressure release
- Overall height: 1.02 in; cap depth: 0.70 in
- Filler neck outside diameter: 1.50 in
Product Details
The Motorad T158 coolant reservoir cap is manufactured to meet OEM specifications and uses quality-tested components for cooling-system service. Its relief and vacuum valve design supports proper reservoir operation in demanding automotive cooling systems. This part cross-references Gates T158 for the same application.
Common Issues This Part Can Address
- Cracked or worn coolant reservoir cap
- Loss of proper sealing at the reservoir neck
- Incorrect cap fit on a 1.50 in filler neck
- Cooling system service needs on Hyundai Sonata, Genesis G80, and Kia Optima applications
- Replacement of a damaged cam-on style reservoir cap
Installation Notes and Tips
Confirm the filler neck outside diameter, attachment style, and system type before installation. Align the cam-on tabs fully and seat the cap evenly to maintain a proper seal. Verify the cap matches the vehicle’s reservoir design and cooling-system requirements for the listed Hyundai, Genesis, and Kia applications.
Quality Assurance
Motorad manufactures this Standard T158 cap to OEM specifications and quality tests it for use in automotive cooling systems.
| Brand | Motorad |
|---|---|
| Part Number | T158 |
| Position | Standard |
| Material | Plastic |
| Material | Plástico |
| 10810 | No |
| Diameter | 2.83 |
| Diameter | 71.88 |
| Color | Black |
| Color | Negro |
| Attachment Type | Cam on |
| Attachment Type | Sobre leva |
| Overall Height | 1.02 |
| Overall Height | 25.91 |
| Type | Estándar |
| Type | Standard |
| Cap Depth | 0.70 |
| Cap Depth | 17.78 |
| Pressure Release Lever | No |
| Quick Pressure Release | No |
| Shape | Redondo |
| Shape | Round |
| System Type | Open and closed |
| Indicator Markings | Yes |
| Indicator Markings Color | Black |
| Indicator Markings Color | Negro |
| Vented | No |
| Pressurized | No |
| 9811 | 1.25 |
| 9811 | 31.75 |
| Filler Neck Outside Diameter | 1.50 in |
This part fits 31 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2023 | Genesis | G80 | 2.5L | L4 | N/A | Relief pressure N/A; Standard | |
| 2023 | Hyundai | Nexo | -L | -- | N/A | Relief pressure N/A; Standard | |
| 2022 | Genesis | G80 | 2.5L | L4 | N/A | Relief pressure N/A; Standard | |
| 2022 | Genesis | G90 | 5.0L | V8 | N/A | Relief pressure N/A; Standard | |
| 2021 | Genesis | G90 | 5.0L | V8 | N/A | Relief pressure N/A; Standard | |
| 2020 | Genesis | G80 | 5.0L | V8 | N/A | Relief pressure N/A; Standard | |
| 2020 | Genesis | G90 | 5.0L | V8 | N/A | Relief pressure N/A; Standard | |
| 2020 | Kia | Cadenza | 3.3L | V6 | N/A | Relief pressure N/A; Standard | |
| 2020 | Kia | K900 | 3.3L | V6 | N/A | Relief pressure N/A; Standard | |
| 2020 | Kia | Optima | 2.4L | L4 | N/A | Relief pressure N/A; Standard | |
| 2019 | Genesis | G80 | 5.0L | V8 | N/A | Relief pressure N/A; Standard | |
| 2019 | Genesis | G90 | 5.0L | V8 | N/A | Relief pressure N/A; Standard | |
| 2019 | Hyundai | Sonata | 2.4L | L4 | N/A | Relief pressure N/A; Standard | |
| 2019 | Kia | Cadenza | 3.3L | V6 | N/A | Relief pressure N/A; Standard | |
| 2019 | Kia | K900 | 3.3L | V6 | N/A | Relief pressure N/A; Standard | |
| 2019 | Kia | Optima | 2.4L | L4 | N/A | Relief pressure N/A; Standard | |
| 2018 | Genesis | G80 | 5.0L | V8 | N/A | Relief pressure N/A; Standard | |
| 2018 | Genesis | G90 | 5.0L | V8 | N/A | Relief pressure N/A; Standard | |
| 2018 | Hyundai | Sonata | 2.4L | L4 | N/A | Relief pressure N/A; Standard | |
| 2018 | Kia | Cadenza | 3.3L | V6 | N/A | Relief pressure N/A; Standard | |
| 2018 | Kia | Optima | 2.4L | L4 | N/A | Relief pressure N/A; Standard | |
| 2017 | Genesis | G80 | 5.0L | V8 | N/A | Relief pressure N/A; Standard | |
| 2017 | Genesis | G90 | 5.0L | V8 | N/A | Relief pressure N/A; Standard | |
| 2017 | Hyundai | Sonata | 2.4L | L4 | N/A | Relief pressure N/A; Standard | |
| 2017 | Kia | Cadenza | 3.3L | V6 | N/A | Relief pressure N/A; Standard | |
| 2017 | Kia | Optima | 2.4L | L4 | N/A | Relief pressure N/A; Standard | |
| 2016 | Hyundai | Genesis | 5.0L | V8 | N/A | Relief pressure N/A; Standard | |
| 2016 | Hyundai | Sonata | 2.4L | L4 | N/A | Relief pressure N/A; Standard | |
| 2016 | Kia | Optima | 2.4L | L4 | N/A | Relief pressure N/A; Standard | |
| 2015 | Hyundai | Genesis | 5.0L | V8 | N/A | Relief pressure N/A; Standard | |
| 2015 | Hyundai | Sonata | 2.4L | L4 | GAS | N/A | Relief pressure N/A; Standard |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.