Engine and Engine Management Guides

These guides cover the engine and everything bolted to it: internals and rebuilds, mounts and sealing, lubrication and cooling, filtration and timing, ignition and electrical hardware, and the emissions and fuel systems around a modern diesel or turbocharged engine. Every page answers a specific sourcing, fitment or diagnostic question and links to the individual articles underneath it.

Choose the guide for the part you are dealing with

Start with the system, then narrow to the component. Each guide groups its articles by the decision you are actually making.

• Engine Internals — Pistons, ring end-gap, cylinder heads, camshafts and the rebuild-versus-replace calculation. (12 guides)
• Engine Mounts, Gaskets & Sealing — Hydraulic versus solid mounts, position labelling, durometer, valve covers and head gaskets. (25 guides)
• Engine Lubrication & Cooling — Oil pumps and pressure diagnosis, water pumps, thermostats, oil coolers and cooling packages. (20 guides)
• EGR Coolers — EGR cooler symptoms, leak testing, clean-versus-replace economics, Euro 6 compliance and materials. (25 guides)
• Fuel & Turbochargers — Fuel pumps, injectors, fuel system components, turbocharger selection and airflow hardware. (14 guides)
• Engine Filtration — Oil, air and fuel filters: housing style, package scope and flow direction. (5 guides)
• Timing & Accessory Drive — Timing kits and intervals, tensioners, pulleys and torsional dampers. (8 guides)
• Ignition & Electrical — Spark plug fitment, ignition coils, misfire diagnosis, glow plugs and solenoid valves. (20 guides)
• Sourcing & Suppliers — Choosing a supplier or manufacturer, wholesale QC, packaging and controlling returns. (15 guides)
• Components Explained — Plain-language explainers for engine systems and components, and aftermarket strategy. (30 guides)
• Cooling & Thermal — Radiator fitment, airflow, overheating diagnosis, thermostats and fan clutches. (6 guides)
• Performance & Upgrades — Cold air intakes, exhaust and throttle hardware, real versus claimed gains. (13 guides)

Engine parts in the store

Matching engine components, grouped by the same system, are listed under Engine System.

Frequently asked questions

Where should I start if I already know the part number?

Go straight to the component guide above — Engine Internals for pistons and cylinder heads, or Lubrication and Cooling for oil and water pumps. Each guide links the individual articles.

Do these guides cover diesel and petrol engines?

Both. EGR, fuel and turbo content is weighted towards diesel and turbocharged applications because that is where the sourcing and diagnostic questions concentrate.