PREMIUM ENGINE MANAGEMENT SOLUTIONS NEW
£3M STOCK INVESTMENT IN WALKER PRODUCTS
Walker Products is one of the largest privately owned manufacturers of engine sensors, ignition components and fuel system parts.
A trusted partner to worldwide OE and Tier 1 manufacturers, they bring their expertise, quality and comprehensive range to the UK aftermarket through GSF Car Parts.
DON’T THINK DEALER-ONLY…THINK GSF
• OE quality at competitive aftermarket prices
• 96% coverage for car and LCV applications
• Save time sourcing the right part - stock in every branch
• 100% engineered and tested to OE specifications
WALKER is known for exact OEM fit, form and function
EXHAUST PRESSURE SENSORS
EXHAUST GAS TEMPERATURE SENSORS
Air Charge Temperature Sensors
Measures the temperature of the air entering the engine, resulting in the ECU adjusting fuel and ignition timing based on air density.
Why WALKER?
• Accurate temperature readings for boosted engines prevents detonation and over-fueling
• Thermal response matching OE specs keeps ECM trim tables accurate.
• Robust sensor tip material resists heat from turbochargers
HONDA ACCORD
Camshaft & Crankshaft Position Sensors
Work together to ensure precise engine timing for optimal performance, fuel efficiency and emissions control. Why WALKER?
• OE-match signal integrity for accurate timing data to ensure precise ignition and fuel delivery.
• Vibration-resistant construction improves durability in harsh engine environments
• Plug-and-play design reduces installation time
Coolant Temperature Sensors and Senders
Measures the temperature of the coolant. It’s a critical input for the ECU to manage various engine functions.
Why WALKER?
• Corrosion-resistant housings for long service life
• OEM thread and connector fit no adapters or harness hacks needed
Mass Air Flow Sensors
Measures the mass of incoming air, accounting for air temperature and density. This helps deliver the optimal air-fuel ratio.
Why WALKER?
• Genuine OE airflow calibration optimises fuel trims and shift points
• Pre-calibrated and pre-oiled (if required) no extra steps, simply install and go
• Contamination resistant improving service life and reliability
Oil Pressure Sensors and Switches
Measures the pressure of the engine oil circulating through the system and warns of low pressure.
Why WALKER?
• Real-time pressure accuracy prevents false warning lights.
• Durable diaphragm and internal seals for long service life
• OE connectors no wire splicing required
Exhaust Gas Pressure Sensors
Monitors exhaust system back pressure, often before and after components like the turbo or DPF.
Why WALKER?
• OE-match calibration ensures proper regeneration timing and reduced DPF failures
• Durable diaphragm design to withstand high heat and soot exposure
Exhaust Gas Temperature Sensors
Responsible for measuring and monitoring the temperature of exhaust gas across multiple locations in the exhaust system.
Why WALKER?
• 100% OE-based ensuring proper function of processes such as DPF regeneration and turbo boost control
• Thermocouple-based accuracy captures extreme exhaust temps up to 900°C
• Shielded probe tips prolongs life of soot-laden exhaust stream
OE-spec performance compliance and optimal fuel economy
• Quick light-off design improves cold-start emissions and sensor responsiveness
• OE manufactured sensor utilised in all lambda sensors
Manifold Absolute Pressure (MAP) Sensors
Measures the pressure inside the intake manifold and sends this data to the ECU, to determine engine load, air density, altitude compensation and the correct air-fuel ratio.
Why WALKER?
• Precise pressure readings enables accurate fuel mixture and engine load detection
• Resists heat soak & contaminants to maintain reliable readings in intake environment
• OE-grade PC boards ensures fast and stable voltage response
