Quick answer: Timing Chain Replacement on a 2016–2021 Hyundai Tucson is rated Advanced and takes about 6-8 hours. You'll need 10 tools for this job, and parts cost about $750. This guide walks you through the full job step by step, including the mistakes to avoid.
| Part Name |
Part Number |
Price |
Buy |
| Timing Chain Kit |
CY-HYD034 |
$300.00 |
|
| Timing Chain Tensioner |
BT7046 |
$150.00 |
|
| Timing Chain Guide |
BG5761 |
$100.00 |
|
| Crankshaft Sprocket |
— |
$80.00 |
|
| Cam Phaser (VVT) |
— |
$120.00 |
|
| Front crankshaft seal |
— |
— |
|
About prices: shown prices are typical retail averages and change frequently; cheaper alternatives may be available. Confirm the current price before buying.
💡 Pro tip: Order all parts at once to save on shipping
Step-by-Step Instructions
Follow these steps carefully
1
Diagnose and prepare for major engine work
Disconnect the negative battery cable. Drain coolant and oil if the front cover must come off. This is an advanced job — have the service manual torque/timing specs ready.
🔧 Mechanic's note — Ray Delgado
I diagnose the Tucson timing job and pull the negative first — on last. The crank gets turned by hand for hours on this job, and I need the electrical system dead the whole time. The order is habit now.
2
Remove accessories and the front cover
Remove the serpentine belt, harmonic balancer/crank pulley, and any brackets blocking the timing cover. Support the engine if a mount must be removed. Unbolt the timing cover carefully and note sealant locations.
3
Lock the engine at TDC and remove the chain set
Rotate to TDC and install cam/crank locking tools if specified. Relieve tensioner pressure, remove the chain, guides, and tensioner as a set. Inspect sprocket teeth for hooking or wear and replace sprockets if worn.
4
Install the new chain, guides, and tensioner
Fit new guides and tensioner, then route the new chain with colored links or marks aligned to the sprocket marks per the procedure for this engine. Oil the tensioner as required before activation.
5
Verify timing and reseal the cover
Activate the tensioner, remove locks, and rotate the engine by hand two full turns — reconfirm all marks. Clean cover mating surfaces and apply the specified sealant bead; install a new front crank seal. Torque cover bolts in sequence.
6
Refill fluids, start, and listen
Reinstall the balancer, belt, and mounts. Refill oil and coolant, reconnect the battery, and start the engine. Listen for chain rattle on cold start and watch for oil/coolant leaks at the cover.
All Done!
Test your repair before closing everything up. If something doesn't work right, double-check your steps.
⚠️ Common Mistakes to Avoid
- • Not properly securing the engine during the repair
- • Failing to align timing marks correctly
- • Using incorrect torque specifications for bolts
