OE Quality
60-Day Returns

Beck Arnley 159-1131 Fuel Injector
Beck Arnley 159-1131 Fuel Injector
Beck Arnley 159-1131 is a direct replacement fuel injector for select Lexus and Toyota hybrid applications with new port injection. It is built to match OE form, fit, and function for a straightforward repair on the fuel injection system.
Key Features
- Direct replacement fuel injector for OE-style service
- Designed for foreign nameplate applications with attention to fit and function
- Supports new port injection setups on select Lexus and Toyota models
- Backed by Beck Arnley sourcing and specification standards
- Part number 159-1131 for accurate ordering and catalog lookup
Vehicle Fitment
- Fits 2013-2018 Lexus GS450h, N/A, NEW, PORT INJECTION
- Fits 2018 Lexus LS500h, N/A, NEW, PORT INJECTION
- Fits 2017-2018 Toyota Highlander, N/A, NEW, PORT INJECTION
- Fits 2016 Lexus RX450h, N/A, NEW, PORT INJECTION
Detailed Description
This Beck Arnley fuel injector is engineered as an OE replacement for hybrid vehicles that use port injection. For Lexus GS450h, Lexus LS500h, Toyota Highlander, and Lexus RX450h applications, 159-1131 helps restore proper fuel delivery when the original injector is worn, leaking, or no longer performing to specification. Beck Arnley sources parts through a global network and builds them to meet the brand’s required form, fit, and function standards.
What It Helps Address
- Hard starting caused by a weak or inconsistent injector
- Rough idle related to uneven fuel delivery
- Fuel trim issues tied to injector wear or contamination
- Misfire concerns associated with poor atomization
- Fuel leakage from a failing injector assembly
Installation Notes and Tips
Verify engine and injection system details before installation to confirm the vehicle uses the listed new port injection application. Inspect related fuel system components, seals, and connectors during service, and follow factory procedures for depressurizing the fuel system before removal and replacement. Use the part number 159-1131 to confirm the correct injector for the application.
Quality Assurance
Beck Arnley parts are specified as direct replacements for original equipment applications across foreign nameplates, with emphasis on OE-quality fit and performance. The brand’s sourcing and specification process is intended to support reliable installation and consistent operation in the listed Lexus and Toyota vehicles.
This part fits 10 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2018 | Lexus | GS450h | 3.5L | V6 | N/A | NEW, PORT INJECTION | |
| 2018 | Lexus | LS500h | 3.5L | V6 | N/A | NEW, PORT INJECTION | |
| 2018 | Toyota | Highlander | 3.5L | V6 | FULL HYBRID EV-GAS (FHEV) | N/A | NEW, PORT INJECTION |
| 2017 | Lexus | GS450h | 3.5L | V6 | N/A | NEW, PORT INJECTION | |
| 2017 | Toyota | Highlander | 3.5L | V6 | FULL HYBRID EV-GAS (FHEV) | N/A | NEW, PORT INJECTION |
| 2016 | Lexus | GS450h | 3.5L | V6 | N/A | NEW, PORT INJECTION | |
| 2016 | Lexus | RX450h | 3.5L | V6 | N/A | NEW, PORT INJECTION | |
| 2015 | Lexus | GS450h | 3.5L | V6 | N/A | NEW, PORT INJECTION | |
| 2014 | Lexus | GS450h | 3.5L | V6 | N/A | NEW, PORT INJECTION | |
| 2013 | Lexus | GS450h | 3.5L | V6 | N/A | NEW, PORT INJECTION |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.