Jeep FAQ, Manuals and Fluid Capacities

Answers to the questions Jeep owners ask most, where to find manuals for your Cherokee XJ, Wrangler TJ or Wrangler JK, and fluid capacities for the main components. If your question isn't here, send us your rego or VIN or call 0421 163 823.

On this page: Ordering and parts | Common Jeep questions | Manuals | Fluid capacities

In-depth guides: Jeep death wobble | JK 3.6L oil filter housing leak | Driveline vibration after a lift | Adjustable panhard rod after a lift

Ordering and parts

How do I know a part will fit my Jeep?

Fitment changes between models, years, engines and markets, and Australian right-hand-drive Jeeps differ from US vehicles in places. The surest way is to send us your rego or VIN through the parts request form before you order and we'll check it for you.

Will a part made for a US left-hand-drive Jeep fit my right-hand-drive Jeep?

Many mechanical parts are shared, such as driveline, suspension and most engine components. Parts tied to the driver's side are often different on right-hand-drive vehicles, including steering components, dash and interior trim, floor coverings and some pedal and firewall parts. Our moulded carpet and vinyl flooring are made for right-hand-drive Jeeps. If you're unsure, ask us before ordering.

What do XJ, TJ, JK and JL mean?

They are Jeep's model codes. XJ is the Cherokee built from 1984 to 2001. TJ is the Wrangler built from 1996 to 2006. JK is the Wrangler built from 2007 to 2018, and JKU is the four-door JK Unlimited. JL is the Wrangler from 2018 onwards, and JT is the Gladiator ute.

Can you find a part that isn't listed on the site?

Yes. Use the parts request form with your rego or VIN, your model and the parts you're after, and we'll be in contact to help you find it.

How long does delivery take, and can I return a part?

Orders are dispatched within one business day of payment unless the product page says otherwise, and bulky items need a freight quote. See our shipping policy and refund policy for the details.

Common Jeep questions

These are general pointers on problems that come up again and again among Jeep owners. They are a starting point for diagnosis, not a substitute for inspecting your vehicle.

What is death wobble, and what causes it?

Death wobble is a violent side-to-side shake of the front end, usually set off by a bump at highway speed, that only stops when you slow right down. It affects solid front axle Jeeps including the XJ, TJ and JK. It is almost always caused by wear or looseness in the front end, and the usual suspects are the panhard rod (track bar) bushings and mounting bolts, ball joints, tie rod ends, control arm bushings and wheel balance. A steering stabiliser can mask the shake but does not fix the cause. Check the panhard rod first, then work through the rest. We stock an adjustable front panhard rod for the XJ, ZJ and TJ and heavy-duty ball joints for the JK. Read the full guide: Jeep death wobble, causes, checks and how to fix it.

Do I need an adjustable panhard rod after fitting a lift?

Lifting a Jeep with a fixed-length panhard rod pulls the front axle sideways, so the axle no longer sits centred under the body. An adjustable panhard rod lets you re-centre it, which helps handling and keeps the tyres clear of the body. It is generally recommended on vehicles lifted about 2 inches or more. Read the full guide: do you need an adjustable panhard rod after a lift?

Why do I have a driveline vibration after a lift?

A lift steepens the driveshaft angles, and the joints start working outside the range they were designed for. On the XJ and TJ this usually shows up as a rear driveshaft vibration, and the common long-term fix is a slip yoke eliminator with a double cardan (CV) driveshaft. On the JK, the factory front driveshaft uses a Rzeppa CV joint whose boot can fail at lift heights of around 3 inches or more. We stock a 1310 CV driveshaft rebuild kit for the TJ, XJ and ZJ and a high-angle Rzeppa CV joint kit for the JK. Read the full guide: driveline vibration after lifting your Jeep.

My 4.0L cranks but won't start, or cuts out when hot. Where do I start?

On the 4.0L in the XJ and TJ, a failing crankshaft position sensor is one of the most common causes of a crank-no-start or an engine that dies when hot and restarts once cool. It often fails without logging a fault code. Check it along with the basics of fuel pressure and spark before replacing more expensive parts.

Is the oil leak at the back of my 4.0L the rear main seal?

Not always. Oil from higher up runs down the back of the engine and drips from the same spot, so leaks from the valve cover gasket and the oil filter adapter seals are often mistaken for the rear main seal. Clean the engine, find the highest wet point, and fix that first.

My XJ runs hot. What should I check?

The XJ's cooling system has little spare capacity, so it needs every part working properly. Check the radiator for blockage inside and out, the fan clutch and electric fan, the thermostat, the water pump and the radiator cap, and make sure the system is properly bled. Fix overheating promptly, because repeated overheating damages the cylinder head.

Why is there oil in the valley of my JK's 3.6L V6?

The 3.6L Pentastar's oil filter housing and cooler sits in the valley on top of the engine and is made of plastic from the factory. Heat makes it warp or crack, and oil or coolant then pools in the valley and runs down the back of the engine. Replacing the housing is the fix. We stock the Dorman aluminium oil filter housing and cooler, which replaces the plastic unit. Read the full guide: JK 3.6L oil filter housing leak, symptoms and fix.

How do I tell which axles my Jeep has?

Look at the shape of the differential cover and count the bolts. The Dana 30 front axle has a rounded cover with 10 bolts. The Dana 35 rear has an oval cover with 10 bolts. The Chrysler 8.25 rear, found on many XJs, has a round cover with a flat bottom edge and 10 bolts. The Dana 44 has a larger cover with an uneven, angular outline and 10 bolts. Your build sheet or VIN will confirm it, and we can help if you send us your details.

What size tyres can I fit?

It depends on the model, wheel offset, suspension and how much trimming you are prepared to do, so treat any figure as a guide. Each state also limits how far you can increase tyre diameter and ride height before engineering approval is needed, so check the rules with VicRoads or your state's road authority before buying tyres or a lift.

Will a replacement soft top fit my TJ's original frame?

The Sierra Offroad soft tops we stock are replacement fabric tops for the 1996 to 2006 Wrangler TJ. They fit the factory soft top hardware, which you need to have and which must be in good condition.

Manuals for the XJ, TJ and JK

Factory owner's manuals and service manuals are copyrighted by the manufacturer, so we link to official sources and do not host copies.

  • Owner's manuals: Mopar, Jeep's parts and service arm, provides owner's manuals online. Go to Mopar's owner's manual page and select the brand, year and model. These are US-market manuals, so some details differ on Australian right-hand-drive vehicles.
  • Australian handbooks: the handbook supplied with your vehicle is the reference for Australian-delivered Jeeps. A Jeep dealer can help with a replacement.
  • Factory service manuals: the workshop manual for your model and year covers torque settings, wiring diagrams and repair procedures. These are sold through Jeep dealers and Mopar's technical publications service.

If you are trying to identify a part or a part number, send us your rego or VIN and we'll help.

Fluid capacities

Read this first. These figures are a guide compiled from published Jeep specifications. Capacities vary with year, engine, transmission and axle, and Australian-delivered vehicles can differ from US ones. Always confirm against the handbook or service manual for your vehicle. Gearboxes, transfer cases and differentials are filled to the bottom of the fill plug hole, and engines and automatic transmissions are filled to the dipstick mark, so use the level and not the number as your final check.

Jeep Cherokee XJ

Component Capacity
Engine oil with filter, 4.0L petrol 5.7 L
Engine oil with filter, 2.5L petrol 3.8 L
Cooling system, 4.0L 11.4 L
Cooling system, 2.5L petrol 9.5 L
AW4 automatic transmission About 3.3 L drain and refill; about 8 L from dry
AX-15 manual transmission 3.1 L
NV3550 manual transmission About 2.0 to 2.3 L
NP231 transfer case 1.0 L
NP242 transfer case 1.4 L
Dana 30 front differential 1.2 L
Dana 35 rear differential 1.7 L
Chrysler 8.25 rear differential About 2.1 L
Dana 44 rear differential 1.9 L

Jeep Wrangler TJ

Component Capacity
Engine oil with filter, 4.0L 5.7 L
Engine oil with filter, 2.4L and 2.5L 3.8 L
Cooling system, 4.0L 9.9 L
Cooling system, 2.4L and 2.5L 8.5 L
32RH automatic transmission (to 2002) About 8.1 L from dry
42RLE automatic transmission (2003 to 2006) 3.8 L drain and refill; 8.3 L from dry
AX-15 manual transmission (to 1999) 3.1 L
NV3550 manual transmission (2000 to 2004) About 2.0 to 2.3 L
NSG370 manual transmission (2005 to 2006) 1.5 L
NP231 transfer case 1.0 L
NV241 Rock-Trac transfer case (Rubicon) 2.0 L
Dana 30 front differential 1.2 L
Dana 35 rear differential 1.7 L
Dana 44 differential, front (Rubicon) or rear 1.9 L

Jeep Wrangler JK and JKU

Component Capacity
Engine oil with filter, 3.8L V6 5.7 L
Engine oil with filter, 3.6L V6 5.7 L on early engines; later engines take less, so check your handbook
Engine oil with filter, 2.8L CRD diesel 6.6 L
Cooling system, 3.8L V6 12 L
Cooling system, 3.6L V6 12 L (2012); 9.9 L (2013 onwards)
Cooling system, 2.8L CRD diesel 12 L
42RLE 4-speed automatic 3.8 L drain and refill; 8.3 L from dry
NAG1 (W5A580) 5-speed automatic 5.0 L drain and refill; 7.7 L from dry
545RFE 5-speed automatic (4x4) 6.2 L drain and refill; 16 L from dry
NSG370 6-speed manual 1.5 L
NV241 transfer case 2.0 L
Dana 30 front differential 1.0 L
Dana 44 front differential (Rubicon) 1.3 L
Dana 44 rear differential 2.25 L

Fluid types

Fluid specifications change between years, so use the grade listed in your handbook. As a guide, Jeep specifies ATF+4 for the 42RLE, NAG1 and 545RFE automatics and the NV241 transfer case, and 80W-90 GL-5 gear oil for the differentials, with 75W-140 synthetic recommended for towing. Rear differentials with a Trac-Lok limited slip also need about 118 ml of limited slip additive.

Not sure which transmission, transfer case or axle you have? Send us your rego or VIN and we'll tell you.