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Toyota T100 Exhaust Gas Recirculation (EGR) Lines

Toyota T100 Exhaust gas recirculation (egr) lines

Starting at $33.95, AutoBuffy stocks 2 EGR lines from SKP and Dorman for the Toyota T100. The EGR line is a metal or metal-braided tube that routes exhaust gases back into the intake manifold to lower combustion temperatures and reduce NOx emissions. A cracked or clogged line causes rough idle, failed emissions tests, and can trigger engine knock if left unaddressed.

Signs your Toyota T100 needs a new EGR line

  • Check Engine Light on with codes P0400, P0401, or P0402 stored in the ECU
  • Rough or erratic idle, especially when the engine is fully warmed up
  • Noticeable exhaust smell inside or near the engine bay from a cracked or leaking tube
  • Engine ping or knock under light throttle load at highway speeds
  • Failed state emissions or smog inspection due to elevated NOx readings
  • Reduced fuel economy as the ECU compensates for incorrect EGR flow readings

Which EGR line should you buy for your Toyota T100?

EGR lines vary by material, design, and whether they include fittings or gaskets. The right choice depends on how much heat and vibration your Toyota T100 generates and whether you want a direct bolt-on fit or a flexible repair option. Confirm your engine code before ordering, as some T100 applications use more than one EGR line routing.

OE-Equivalent Steel Tube
Best for
Owners who want an exact factory replacement
What you get
Rigid pre-bent steel tube with correct end fittings; matches original routing and sealing surfaces exactly
Stainless Steel Upgraded Tube
Best for
High-mileage or high-heat applications
What you get
Corrosion-resistant stainless construction that outlasts mild-steel originals, especially in rust-prone climates
Flexible Braided Metal Line
Best for
Quick repairs or tight-budget fixes
What you get
Flexible stainless-braided hose that adapts to minor misalignment; useful when original rigid tube is discontinued or backordered
Complete EGR Line Kit (with gaskets)
Best for
Full service or repeat failures
What you get
Tube plus all required crush gaskets and copper sealing washers included; eliminates a separate gasket purchase and ensures leak-free installation

Exhaust gas recirculation (egr) lines brands we stock for your Toyota T100

SKP
1 option · from $33.95
Dorman
1 option · from $153.95

Replacing the EGR line on a Toyota T100

Moderate⏱ 1–2 hoursSocket set and ratchet (metric and standard)Line wrench set (to avoid rounding flare fittings)Penetrating oil (for corroded fittings)Flat-blade screwdriver or pick (gasket removal)Shop rags and safety glasses

Allow the engine to cool completely before starting, as EGR components retain extreme heat. Soak threaded fittings with penetrating oil well in advance, then use a line wrench rather than an open-end wrench to break loose flare nuts without rounding them. Replace all crush gaskets and copper sealing washers at both ends, clear any stored EGR codes after reinstallation, and run the engine to confirm no exhaust odor or new codes appear.

Frequently asked questions

How much does it cost to replace EGR lines on a Toyota T100?
Parts start at $33.95 at AutoBuffy. A shop will typically add one to two hours of labor on top of the part cost. Total repair cost varies by location and whether related components like EGR valve gaskets need replacement at the same time. DIY installation keeps the job to the part price alone.
Can I drive my Toyota T100 with a leaking EGR line?
Short trips are possible, but it is not recommended. A leaking EGR line allows hot exhaust gases to escape near plastic intake components and wiring, creating a burn or fire risk. It also causes persistent Check Engine codes and will cause your Toyota T100 to fail an emissions test, making continued driving a legal issue in many states.
Will a bad EGR line cause my Toyota T100 to fail emissions?
Yes. A cracked or blocked EGR line disrupts exhaust gas recirculation flow, causing NOx emissions to spike above legal limits. Most state smog checks measure NOx directly or read live OBD-II data. Even if the tube is not visibly broken, a stored P0400-series code alone is enough to fail the inspection.
Is the EGR line the same as the EGR valve or EGR cooler on a Toyota T100?
No — they are separate components that work together. The EGR valve controls how much exhaust gas is recirculated, the EGR cooler lowers that gas temperature on diesel and some gasoline engines, and the EGR line is simply the tube connecting them to the intake. All three can fail independently, so confirm which component is at fault before ordering.
How long does an EGR line last on a Toyota T100?
Most EGR lines last well into the vehicle's life under normal conditions, but heat cycling, road salt, and vibration accelerate corrosion and fatigue cracking. Lines on turbocharged or diesel T100 applications tend to wear faster due to higher exhaust temperatures. Inspect the tube whenever the EGR valve or cooler is serviced.
Does replacing the EGR line require removing the intake manifold on a Toyota T100?
On most applications it does not, but access varies significantly by engine layout. Transverse four-cylinder engines in the T100 usually allow EGR line replacement with basic hand tools and minimal disassembly. Some V6 and diesel configurations route the line beneath the intake, requiring partial manifold removal. Check a vehicle-specific diagram before beginning the job.

Shop exhaust gas recirculation (egr) lines by year for the Toyota T100

1997199619951994

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Exhaust gas recirculation (egr) lines for other Toyota models

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