exhaust

EGR Tube

for 2017 Honda Civic 1.5L I4 Turbo · FWD

Difficulty

Moderate

Time

1.5 h

Tools

Steps

✓Fact-checked. Built from OLP's spec database, then independently fact-checked line by line with every correction applied. Master-tech sign-off by Chris Hackleman is queued. Cross-check torque values against the factory manual, and stop if anything looks unsafe. How our data is made.

This procedure covers removal and installation of the EGR (Exhaust Gas Recirculation) tube on the 1.5L turbocharged engine, connecting the exhaust manifold to the EGR valve.

Warnings

⚠️Allow engine and exhaust system to cool completely before starting work. Components can remain hot enough to cause severe burns for over an hour after engine shutdown.

⚠The turbocharger is located near the EGR tube. Avoid contacting turbocharger components and oil lines during work.

⚠EGR tube fasteners are prone to corrosion and seizure. Apply penetrating oil and allow to soak if fasteners are difficult to remove.

ℹ️This procedure requires working in a confined space near the firewall. A variety of extension lengths will be necessary for proper access.

Tools required

10mm socket and ratchetEssential

12mm socket and ratchetEssential

14mm socket and ratchetEssential

Extension set (3-inch and 6-inch)Essential

Torque wrench (10-50 Nm range)Essential

Anti-seize compoundEssential

Penetrating oil

Wire brush

Flashlight or work lightEssential

Safety glassesEssential

Mechanic's gloves

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Parts

EGR tube assembly × 1 — 18115-5AA-A00 (Use OEM specification)
EGR tube gasket (exhaust side) × 1 — Use OEM specification
EGR tube gasket (valve side) × 1 — Use OEM specification

As an Amazon Associate and Autel/ANCEL partner, OLP earns from qualifying purchases — how we link. This never changes the specs we publish.

Preparation

Ensure engine is completely cold to the touch
Park vehicle on level ground and engage parking brake
Open hood and secure with prop rod
Disconnect negative battery terminal and wait 3 minutes for airbag system to discharge
Remove engine cover by pulling upward on front edge, then lifting off mounting grommets
Spray all EGR tube fasteners with penetrating oil and allow to soak for 10-15 minutes if corrosion is visible

Procedure

1
Remove engine cover heat shield
Locate the heat shield on top of the engine covering the turbocharger area. Remove the heat shield bolts using a 10mm socket. There are typically 3-4 bolts securing the shield. Lift the heat shield away to expose the EGR tube and turbocharger area.
Torque spec
Heat Shield Bolts10 Nm (7 lb-ft)
2
Disconnect electrical connectors if present
Check for any electrical connectors near the EGR valve at the top of the EGR tube. If equipped with EGR temperature or position sensors, press the release tab and disconnect the connector. Move wiring harnesses aside for access.
3
Remove upper EGR tube mounting
Locate the EGR valve connection at the top of the EGR tube near the intake manifold. Using a 12mm socket with extension, remove the two mounting bolts securing the EGR tube flange to the EGR valve. The valve remains attached to the intake manifold. Note the orientation of the gasket for installation.
Torque spec
Mounting Bolts26 Nm (19 lb-ft)
4
Access lower exhaust manifold connection
From underneath the vehicle or through the engine bay, locate where the EGR tube connects to the exhaust manifold near the turbocharger. This connection is between the exhaust manifold and turbo inlet. Use a flashlight to clearly identify the flange bolts. Note: workspace is very tight in this area.
5
Remove lower EGR tube flange bolts
Using a 14mm socket with appropriate extensions, remove the two flange bolts securing the EGR tube to the exhaust manifold. Work slowly as these bolts are exposed to high heat and may be corroded. If bolts are seized, apply additional penetrating oil and allow to soak, or carefully apply heat with a torch if safe to do so.
⚠These bolts are in a high-heat area and commonly seize. Do not force if resistance is excessive to avoid breaking bolts off in manifold.
Torque spec
Exhaust Flange Bolts45 Nm (33 lb-ft)
6
Remove EGR tube assembly
With both upper and lower connections freed, carefully maneuver the EGR tube out of the engine bay. The tube must be angled and rotated to clear surrounding components including the turbocharger, intake manifold, and wiring harnesses. Work slowly to avoid damaging adjacent components.
7
Clean mating surfaces
Using a wire brush or scraper, thoroughly clean the gasket mating surfaces on both the EGR valve flange and the exhaust manifold flange. Remove all old gasket material and carbon deposits. Surfaces must be flat and clean for proper sealing. Inspect both flanges for warping or damage.
8
Inspect and prepare new EGR tube
Verify the new EGR tube matches the old unit in length, bend angles, and flange positions. Install new gaskets on both the upper and lower flanges. Apply a thin coat of anti-seize compound to the threads of all mounting bolts.
ℹ️Do not apply anti-seize to gasket surfaces, only to bolt threads as specified.
9
Install EGR tube assembly
Carefully maneuver the new EGR tube into position, reversing the removal process. Align the lower flange with the exhaust manifold first, then position the upper flange to the EGR valve. Start all bolts by hand before tightening any to ensure proper alignment.
10
Torque lower exhaust flange bolts
Using a torque wrench with 14mm socket and extensions, tighten the lower exhaust manifold flange bolts to specification in an alternating pattern. Ensure the gasket is properly seated before final torque.
Torque spec
Exhaust Flange Bolts45 Nm (33 lb-ft)
11
Torque upper EGR valve mounting bolts
Using a torque wrench with 12mm socket, tighten the upper EGR valve mounting bolts to specification in an alternating pattern. Verify the gasket remains properly positioned during tightening.
Torque spec
Mounting Bolts26 Nm (19 lb-ft)
12
Reconnect electrical connectors
If any sensors or connectors were disconnected, reconnect them now. Ensure connectors click fully into place and wiring is routed away from hot exhaust components and moving parts.
13
Reinstall heat shield and engine cover
Position the heat shield back over the turbocharger area and install the heat shield bolts, torquing to specification. Reinstall the engine cover by aligning the mounting grommets and pressing down firmly until seated.
Torque spec
Heat Shield Bolts10 Nm (7 lb-ft)
14
Reconnect battery and clear codes
Reconnect the negative battery terminal. Start the engine and allow to idle. Monitor for any exhaust leaks around the EGR tube connections (listen for hissing sounds). Use an OBD-II scanner to clear any EGR-related fault codes that may have been stored.

Reassembly

Torque all fasteners to specification using the values provided
Ensure all electrical connectors are fully seated and secured
Route all wiring harnesses away from hot exhaust components
Verify heat shield and engine cover are properly installed before test drive

Verification

Start engine and listen carefully for exhaust leaks at both EGR tube connections
Allow engine to reach operating temperature and verify no unusual sounds from EGR area
Use OBD-II scanner to verify no EGR-related fault codes are present (P0400-P0409 range)
Test drive vehicle and confirm smooth operation with no check engine light illumination
After test drive, re-inspect EGR tube connections for any signs of exhaust leaks or loosening