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Vehicle Specification Lookup Tool🔍
From 2001 to 2003 the Infiniti QX4 engine has a timing chain and from 1997 to 2000 the Infiniti QX4 engine has a timing belt. All are interference.
Scroll down to see detailed timing belt data for your particular model year of the INFINITI QX4.
| Year | Engine | Belt Or Chain | Interference or Non-Interference |
|---|---|---|---|
| 2001 - 2003 | 3.5L | Timing Chain | Interference |
| 1997 - 2000 | 3.3L | Timing Belt | Interference |
Note: Replacement intervals are broad recommendations and can be affected by age, weather conditions, running conditions etc. Check with the owner's manual/ manufacturer/ dealership.
Check out the Belt Or Chain specifications for other makes and models.
The 2003 Infiniti QX4 has a timing chain and are interference.
| Engine | Belt Or Chain | Interference or Non-Interference | Service Interval |
|---|---|---|---|
| 3.5L | Timing Chain | Interference | Lifetime |
The 2002 Infiniti QX4 has a timing chain and are interference.
| Engine | Belt Or Chain | Interference or Non-Interference | Service Interval |
|---|---|---|---|
| 3.5L | Timing Chain | Interference | Lifetime |
The 2001 Infiniti QX4 has a timing chain and are interference.
| Engine | Belt Or Chain | Interference or Non-Interference | Service Interval |
|---|---|---|---|
| 3.5L | Timing Chain | Interference | Lifetime |
The 2000 Infiniti QX4 has a timing belt and are interference.
| Engine | Belt Or Chain | Interference or Non-Interference | Service Interval |
|---|---|---|---|
| 3.3L | Timing Belt | Interference | 60k |
The 1999 Infiniti QX4 has a timing belt and are interference.
| Engine | Belt Or Chain | Interference or Non-Interference | Service Interval |
|---|---|---|---|
| 3.3L | Timing Belt | Interference | 60k |
The 1998 Infiniti QX4 has a timing belt and are interference.
| Engine | Belt Or Chain | Interference or Non-Interference | Service Interval |
|---|---|---|---|
| 3.3L | Timing Belt | Interference | 60k |
The 1997 Infiniti QX4 has a timing belt and are interference.
| Engine | Belt Or Chain | Interference or Non-Interference | Service Interval |
|---|---|---|---|
| 3.3L | Timing Belt | Interference | 60k |

The primary purpose of the timing belt or timing chain is to maintain the timing (syncronization) between the crankshaft and the camshaft(s).
A timing belt is made of a rubber compound while a timing chain is made of chain similiar to a bicycle chain.
A timing belt wears out over time and must be replaced at the manufacturer's specified interval. Timing belt failure can result in serious engine damage.
Although a timing chain will wear over time it is usually good for the lifetime of the engine but it should be routinely inspected.
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