Jeep Wrangler, TJ (EU)

Transfer case fluid capacity & service interval

Jeep Wrangler, TJ (EU) transfer case fluid capacity ranges from 1 to 2 liters. Service intervals include checks at 12000 km/6 months, 48000 km, and 48000 km/24 months, with changes at 48000 km/24 months, 96000 km, and 192000 km/96 months. The data covers 10 configurations.

The configuration chart below lists fill volumes and service intervals for each engine and trim variant.

TypeSpecifications
Wrangler 2.4, TJ (2002-2007)
  • Use: Normal
  • Capacity 1 liter
  • Check 48000 km/ 24 months
  • Change 192000 km/ 96 months
  • Code: NV 231
Wrangler 2.4, TJ (2002-2007)
  • Use: Severe
  • Capacity 1 liter
  • Check 48000 km
  • Change 96000 km
  • Code: NV 231
Wrangler 2.4, TJ (2002-2007)
  • Use: Normal
  • Capacity 2 liter
  • Check 48000 km/ 24 months
  • Change 192000 km/ 96 months
  • Code: NV 241
Wrangler 2.4, TJ (2002-2007)
  • Use: Severe
  • Capacity 2 liter
  • Check 48000 km
  • Change 96000 km
  • Code: NV 241
Wrangler 4.0, TJ (2002-2007)
  • Use: Normal
  • Capacity 1 liter
  • Check 48000 km/ 24 months
  • Change 192000 km/ 96 months
  • Code: NV 231
Wrangler 4.0, TJ (2002-2007)
  • Use: Severe
  • Capacity 1 liter
  • Check 48000 km
  • Change 96000 km
  • Code: NV 231
Wrangler 4.0, TJ (2002-2007)
  • Use: Normal
  • Capacity 2 liter
  • Check 48000 km/ 24 months
  • Change 192000 km/ 96 months
  • Code: NV 241
Wrangler 4.0, TJ (2002-2007)
  • Use: Severe
  • Capacity 2 liter
  • Check 48000 km
  • Change 96000 km
  • Code: NV 241
Wrangler 2.5, TJ (1997-2002)
  • Use: Normal
  • Capacity 1,2 liter
  • Check 12000 km/ 6 months
  • Change 48000 km/ 24 months
  • Code: NV 231
Wrangler 4.0, TJ (1997-2002)
  • Use: Normal
  • Capacity 1,2 liter
  • Check 12000 km/ 6 months
  • Change 48000 km/ 24 months
  • Code: NV 231

Additional Notes

  • The Jeep Wrangler TJ (EU) transfer case fluid specifications cover two distinct engine variants for the 1997-2002 period — the 2.5 and the 4.0 — both sharing an identical transfer case fluid capacity of 1.2 liters, with a check interval of 12,000 km or 6 months and a change interval of 48,000 km or 24 months under normal use conditions.
  • For the 2002-2007 engines, both the 2.4 and 4.0 variants list two separate capacity figures — 1 liter and 2 liters — indicating that two different transfer case units were fitted across the production run, each with its own fill volume requirement.
  • The 1-liter and 2-liter capacity entries for the 2002-2007 models share identical interval schedules within the same use condition, meaning the difference between the two figures reflects unit type rather than a variation in service frequency.
  • Under normal use conditions, the 2002-2007 transfer case fluid change interval extends to 192,000 km or 96 months, which is four times longer than the 48,000 km or 24-month change interval specified for the 1997-2002 models under the same conditions.
  • The check interval for the 1997-2002 models is set at 12,000 km or 6 months, considerably shorter than the 48,000 km or 24-month check interval applied to the 2002-2007 models under normal use, reflecting a more frequent monitoring schedule for the earlier generation.
  • Severe use conditions are specified only for the 2002-2007 variants. Under severe use, the fluid change interval for both the 1-liter and 2-liter transfer cases is 96,000 km — exactly half the 192,000 km interval listed under normal use for the same period.
  • The severe use check interval for 2002-2007 models is listed as 48,000 km with no time-based component, whereas the normal use check interval for the same models carries a dual trigger of 48,000 km or 24 months, adding a calendar-based threshold absent from the severe use entry.
  • No severe use condition entries appear for the 1997-2002 Wrangler 2.5 or 4.0 transfer case specifications, as the data for those variants contains only normal use rows.

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