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Land Rover Defender 90 Flame Trap Hoses

Land Rover Defender 90 Flame trap hoses

Starting at low prices, AutoBuffy stocks multiple flame trap hoses from top OE-quality brands to fit your Land Rover Defender 90. The flame trap hose routes crankcase blow-by vapors from the engine back into the intake while a built-in mesh baffle prevents backfires from igniting crankcase gases. A cracked or clogged hose causes rough idle, oil leaks, and failed emissions tests.

Signs your Land Rover Defender 90 needs a new flame trap hose

  • Rough or unstable idle that worsens when the engine is warm — clogged baffle disrupts crankcase pressure balance
  • Oily residue or black sludge around the hose ends or valve cover breather port
  • Visible cracks, hardening, or collapse in the hose body from heat cycling
  • Increased oil consumption with no visible external leak — pressurized crankcase forces oil past seals
  • Check engine light with codes related to lean fuel trim or PCV system faults (e.g. P0171, P0507)
  • Failed emissions inspection due to elevated hydrocarbon readings caused by unfiltered blow-by vapor bypassing the intake

Which flame trap hose should you buy for your Land Rover Defender 90?

The most important factor is fit: flame trap hoses are highly vehicle-specific in length, diameter, and end-fitting style, so confirm the part matches your Land Rover Defender 90's engine code. Beyond fitment, consider whether the replacement hose includes an integrated flame trap (baffle/mesh) or requires you to reuse the original, and whether the material is OE-grade reinforced rubber or a silicone upgrade for longer service life.

OE-Replacement (rubber)
Best for
Daily drivers wanting a direct, no-hassle swap
What you get
Factory-matched material, integrated flame trap mesh, correct end fittings — restores original function exactly
Silicone-reinforced hose
Best for
High-mileage vehicles or engines that run hot
What you get
Greater heat and oil resistance, longer lifespan than standard rubber, same flame trap function
Hose + trap kit (combo)
Best for
Vehicles where the original trap is clogged or damaged beyond cleaning
What you get
New hose and a fresh baffle/mesh assembly in one box — eliminates guesswork on reusing worn components
OEM dealer hose
Best for
Owners who require exact factory specification for warranty or resale
What you get
Guaranteed fitment and materials, typically higher price, sourced from the vehicle manufacturer's supply chain

Replacing the flame trap hose on a Land Rover Defender 90

Easy⏱ 30–60 minutesFlathead screwdriver or hose clamp pliersNeedle-nose pliers (for spring clamps)Shop rags and degreaserFlashlight or work light

Let the engine cool completely, then trace the existing hose from the crankcase breather or valve cover port to the intake pipe, noting the routing before removal. Release the clamps at each end, pull the old hose free, and wipe the connection ports clean of oily residue before sliding the new hose into place. Seat both ends fully onto their fittings and secure the clamps snugly — no sealant is required, and the engine can be started immediately to check for leaks.

Frequently asked questions

How much does it cost to replace flame trap hoses on a Land Rover Defender 90?
Parts start at low prices on AutoBuffy. A flame trap hose is an inexpensive component, but labor can add cost if the hose is buried under intake ducting. Many owners complete the job themselves in under an hour, keeping total cost close to the part price alone.
What does the flame trap hose actually do on a Land Rover Defender 90?
The flame trap hose carries crankcase blow-by gases from the engine block or valve cover to the intake system, where they are burned rather than vented to atmosphere. The integrated flame trap — a metal mesh baffle inside the hose or an inline canister — stops a backfire from traveling back into the crankcase and igniting oil vapors.
Can I drive my Land Rover Defender 90 with a cracked or clogged flame trap hose?
Driving short distances is possible, but not advisable. A cracked hose introduces unmetered air that skews the air-fuel mixture, causing rough running and lean fault codes. A clogged hose builds crankcase pressure that forces oil past seals and gaskets, risking more expensive damage if left unaddressed.
How often should the flame trap hose be replaced on a Land Rover Defender 90?
There is no fixed mileage interval. Rubber flame trap hoses typically last several years before heat and oil exposure cause hardening or cracking. Inspect the hose during every major service — squeeze it to check for brittleness, look for oily buildup at the ends, and replace it at the first sign of deterioration.
Can I clean a clogged flame trap instead of replacing the hose on my Land Rover Defender 90?
If the trap is a separate, reusable canister, cleaning with solvent or carburetor cleaner is sometimes viable for light sludge buildup. However, if the trap is integrated into the hose body, or if the mesh is collapsed or heavily coated, replacement is the more reliable fix and parts are inexpensive enough to make cleaning rarely worth the effort.
Will a faulty flame trap hose cause my Land Rover Defender 90 to fail an emissions test?
Yes. A cracked hose vents raw blow-by hydrocarbons to the engine bay instead of routing them through the intake to be burned, which raises hydrocarbon emissions. A clogged trap disrupts the PCV system's fuel trim correction, potentially triggering a check engine light that will automatically fail an OBD-II emissions inspection.

More parts for your Land Rover Defender 90

Idle Air Control Valve ConnectorUniversal JointControl Arm & Ball Joint AssemblyAccessory Drive BeltEngine Crankcase Breather HoseHVAC Harness ConnectorEngine MountShock Absorber Set

Flame trap hoses for other Land Rover models

Land Rover Range RoverLand Rover Defender 110Land Rover Discovery