Replacing the starter on a 2008 Honda Civic costs $273–$545 in parts and takes about two hours with basic hand tools and jack stands.
A single click or dead silence when you turn the key usually means the starter on your 2008 Civic’s 1.8L engine has failed. The starter sits on the back of the block near the transmission, but the whole swap is doable in a driveway with the right tools and this exact sequence. Below is the step-by-step process for the 1.8L automatic, including the torque spec and the mistakes that stall the job.
What Tools and Parts Do You Need?
The factory starter is a Denso unit. OEM part number 31200-RNA-A01 fits 2006–2008 models; 31200-RNA-A51 covers 2006–2011. Expect to pay $274–$546 for the part. If a shop does the work, labor adds $183–$269 for a total of $482–$797.
| Tool | Size / Spec |
|---|---|
| Wrench / socket | 10 mm (battery terminal) |
| Socket | 12 mm (power wire, bracket bolts) |
| Socket | 14 mm (mounting bolts — verify head size) |
| Torque wrench | 33 ft-lb |
| Socket extensions | 6″ + 12″ for top bolt reach |
| Swivel joint | For hard-to-reach bolts |
| Jack stands | 2 minimum, rated for the vehicle |
Removing the Old Starter
Disconnect the negative battery terminal with a 10 mm wrench and tuck the cable out of the way. This kills power to the starter circuit and prevents accidental shorts while you work near engine and chassis ground points.
Jack up the front of the car and place it on two jack stands — never work under a vehicle supported only by a jack. Removing the front passenger tire opens the wheel well access that makes this job practical. Look for the L-shaped intake manifold bracket bolted over the starter; it’s secured by two 10 mm bolts and one 12 mm bolt. Remove all three and set the bracket aside.
Unclip the small signal wire connector by pressing its release tab and wiggling it off. Then remove the 12 mm nut holding the main power wire and pull the rubber boot off the stud. Keep that boot — it prevents corrosion at the connection point. Lose it and water and debris will eventually cause trouble.
Now remove the two mounting bolts holding the starter to the transmission. A longer socket extension and a swivel joint are almost mandatory for the top bolt — it’s tucked tight against the engine bay wall. Once both bolts are out, swing the starter free and pull it out through the wheel well opening. The starter is heavier than it looks; support it with your free hand as you extract it.
Installing the New Starter
Apply a dab of dielectric grease to the signal wire terminal and the power wire stud before you bolt anything in. Attach both wires to the new starter while it’s still loose — this prevents the wiring harness from getting pinched between the starter body and the engine block, a mistake that can short the system or damage the insulation.
Position the starter and loosely install the bottom mounting bolt first, then the top. Tighten both to 33 ft-lb using a torque wrench. Reinstall the intake manifold bracket, but take care with its top bolts — those thread into plastic and will crack the mounting point if you overtighten them.
Reconnect the negative battery terminal. Start the car and listen for clean, immediate cranking — the engine should turn over without hesitation, clicking, or grinding.
One more check: inspect the power wire boot to confirm it’s fully seated over the stud. A loose boot lets in moisture and road grime, which corrodes the connection and brings you back to the same problem six months later.
FAQs
How do I know if my 2008 Civic starter is failing?
A single loud click when you turn the key, or complete silence from the engine bay, are the most reliable signs. The dashboard lights and radio still come on, confirming the battery is fine but the starter isn’t engaging the flywheel.
Can I replace the starter without removing the intake manifold bracket?
No — the L-shaped bracket blocks direct access to the starter housing. Removing its three bolts (two 10 mm, one 12 mm) takes under a minute and is the only way to swing the starter out through the wheel well opening.
What is the torque spec for the starter mounting bolts?
Honda specifies 33 ft-lb for the two bolts that secure the starter to the transmission. Using a torque wrench here prevents thread damage and ensures the starter stays seated properly under engine vibration.
References & Sources
- Honda OEM Parts Online. “2008 Honda Civic Starter Assembly Diagram and Parts.” Used for OEM part numbers and mounting bolt specifications.
- Honda Parts Online. “Genuine Honda Starter 31200-RNA-A01.” Confirmed OEM part number and Denso manufacturer for 2006–2008 models.
- O’Reilly Auto Parts. “2008 Honda Civic Starter Products.” Verified price range and compatibility for the 1.8L automatic transmission.