2017-2018 Volkswagen Golf Timing Belt vs Timing Chain: How to Replace the Serpentine Belt (Engine: Inline 4 1.8L)
Learn why the 1.8T uses a timing chain, plus step-by-step accessory belt replacement with tools, parts, and safety tips
2017-2018 Volkswagen Golf Timing Belt vs Timing Chain: How to Replace the Serpentine Belt (Engine: Inline 4 1.8L)
Learn why the 1.8T uses a timing chain, plus step-by-step accessory belt replacement with tools, parts, and safety tips for 2017, 2018
đź”§ Golf - Timing Belt Replacement (Not Equipped)
Your Golf’s 1.8T engine uses a timing chain, not a timing belt—so there isn’t a timing belt to replace. A lot of people mean the serpentine (accessory) belt, which drives the alternator and A/C; that one is serviceable and DIY-friendly.
Difficulty Level: Beginner | Estimated Time: 0.5-1.0 hours
⚠️ Safety & Precautions
- ⚠️ Let the engine cool so you don’t burn yourself on hot parts.
- ⚠️ Keep fingers/tools clear of the belt path and pulleys.
- ⚠️ If you raise the front of your Golf, support it with jack stands (never rely on a jack alone).
- ⚠️ Battery disconnect is not required for this belt replacement, but remove the key and keep the car off.
đź”§ Required Tools
You'll need the following tools for this repair:
- Floor jack (rated 2-ton minimum)
- Jack stands (rated 2-ton minimum)
- Wheel chocks
- 17mm socket
- 1/2" drive ratchet
- 16mm wrench
- T25 Torx screwdriver
- Trim clip removal tool
- Flashlight
- Nitrile gloves
- Safety glasses
🔩 Required Parts
HowToo sells all the parts you need for this repair:
- Serpentine (accessory drive) belt - Qty: 1
- Serpentine belt tensioner - Qty: 1 (optional, if noisy/weak)
- Serpentine belt idler pulley - Qty: 1 (optional, if noisy)
đź“‹ Before You Begin
- Park on level ground, put the transmission in 1st gear, and set the parking brake.
- Place wheel chocks behind the rear wheels.
- If you need more room, raise the front and set it on jack stands at the factory jack points.
- Take a quick photo of the belt routing before removal (helps during install).
🔨 Step-by-Step Instructions
Follow these steps in order:
Step 1: Access the belt area
- Open the hood and locate the belt on the passenger side of the engine.
- If access is tight from above, raise the front with a floor jack and support with jack stands.
- Remove any lower splash shield section that blocks access using a T25 Torx screwdriver and a trim clip removal tool.
Step 2: Find the belt tensioner
- Use a flashlight to identify the belt tensioner (spring-loaded arm that keeps the belt tight).
- Tensioner = the self-tightening belt arm.
Step 3: Release belt tension
- Put a 16mm wrench on the tensioner’s hex and rotate it to relieve tension.
- While holding the tensioner released, slide the belt off one easy pulley (usually the alternator pulley).
- Slowly let the tensioner return—don’t let it snap back.
Step 4: Remove the old belt
- Pull the belt out completely and compare it to the new belt for the same length/rib count.
- Check pulleys by spinning them by hand; they should be smooth and quiet.
- If you hear grinding/roughness, plan to replace the idler pulley and/or tensioner.
Step 5: Route the new belt
- Route the belt around the pulleys the same way as your photo.
- Make sure the ribs sit fully in the ribbed pulleys (no “one rib off”).
- Leave the easiest pulley for last so you can slip it on while the tensioner is released.
Step 6: Apply tension and final-check alignment
- Use the 16mm wrench to rotate the tensioner again.
- Slip the belt onto the last pulley, then slowly release the tensioner.
- Visually check every pulley: the belt should be centered and fully seated.
- Misalignment will shred a new belt fast.
Step 7: Reinstall shields and lower the car
- Reinstall any splash shield pieces using the T25 Torx screwdriver and trim clip removal tool.
- Lower the car using the floor jack and remove the jack stands.
âś… After Repair
- Start the engine and watch the belt for 20–30 seconds; it should run smoothly with no wobble.
- Listen for squeal or chirping. If present, shut off and re-check routing and seating.
- Take a short test drive, then do one more quick visual check.
đź’° DIY vs Shop Cost
Shop Cost: $150-$350 (parts + labor)
DIY Cost: $30-$120 (parts only)
You Save: $120-$230 by doing it yourself!
Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 0.5-1.0 hours.
🎯 Ready to get started?
HowToo makes it easy: same-day/2-day shipping on every part, plus all the tools and specialty tools you need! Check out the parts and tools sections below to add everything to your cart.
Two quick questions (so I can help you perfectly):
- Are you trying to replace the accessory/serpentine belt, or did you specifically mean the timing chain inside the engine?
- Any symptoms—belt squeal, check engine light, or rattle on cold start?
Guide for Serpentine Belt replace for these Volkswagen vehicles
| Year Make Model | Sub Model | Engine | Body Style |
|---|---|---|---|
| 2018 Volkswagen Golf | - | Inline 4 1.8L | - |
| 2017 Volkswagen Golf | - | Inline 4 1.8L | - |


















