Welcome Guest
SHOP TRUCK, JEEP & UTV PARTS
Call Our Stateside Experts!
- Home
- Jeep Replacement Parts
- Engine Parts
- TJ Wrangler 2.5L 4 Cylinder Engine Parts
Jeep TJ Wrangler 2.5L 4 Cylinder Engine Parts
Make Sure It Fits Your Vehicle
Factory style replacement 2.5L 4 cylinder engine parts for your 1997-06 TJ Wrangler, Rubicon and Unlimited. As a Jeep owner, there's nothing like the thrill of tearing through mud holes on a soggy spring night or rolling through the sand dunes in the heat of summer. These are moments you live for, and it's important to make sure all your Jeep's parts are maintained. The suspension and tires are important, but the engine makes it all happen.
Keep Your Engine Healthy
There are countless parts of your engine that all contribute to the wild off-road experience you love. Everything from head gaskets to camshafts to pistons comes together to make a beautiful mechanical symphony while you rip the trails apart. For your convenience, our website has a Jeep Wrangler 2.5 engine diagram to help you make sure you're looking for the right part. We also provide all kinds of expert advice. We have videos and articles online to help you select and install the right parts and equipment. If you're not into installing yourself, our stores are all staffed with ASE-certified technicians who can install every part we sell. At 4 Wheel Parts, you never have to worry about being taken care of.
The Best Selection on the Market
Not only do we offer high-quality service, but our inventory is one of the widest available. With over $100 million of on-hand products to choose from, you can rest assured we have the part you're looking for. Our selection includes roughly 600 of the best auto parts manufacturers in the industry. Our customers deserve only the best, which is why our selection of parts is state-of-the-art.
Enjoy Our Price Guarantee
We confidently offer the best prices for off-road parts anywhere. If you think we're just blowing smoke, find out for yourself. We're so sure you won't find a better price, we offer price matching for any legitimately advertised product within 90 days of purchase. Take a look at our merchandise today and buy with full confidence.
1
Omix-ADA Valve Covers
Omix-Ada Valve Cover
3.0
3.0
(2)
From $9.99
- Valve Cover
- California Residents: WARNING
1
Crown Automotive Valve Covers
Crown Automotive Valve Cover
5.0
5.0
(2)
From $31.97
- Valve Cover
- Plastic
- Grommets sold separately
- California Residents: WARNING
2
Crown Automotive Valve Cover Gasket
Crown Automotive Valve Cover Gasket
4.0
4.0
(1)
From $1.99
- Valve Cover Gasket
- California Residents: WARNING
2
Omix-ADA Engine Valve Cover Gaskets
Omix-Ada Engine Valve Cover GasketFrom $5.99
- Valve Cover Gasket
- California Residents: WARNING
2
Omix-ADA Valve Cover Gasket Kits
Omix-Ada Valve Cover GasketFrom $8.99
- Valve Cover Gasket
- California Residents: WARNING
2
Omix-ADA Valve Cover Mount Kits
Omix-Ada Valve Cover Mount KitFrom $28.99
- Valve Cover Mount Kit
- Includes gasket,rubber grommets,oil cap and bolts
- California Residents: WARNING
3
Crown Automotive Head Gasket
Crown Automotive Head GasketFrom $10.79
- Head Gasket
- California Residents: WARNING
3
3
3
Crown Automotive Engine Upper Gasket Set
Crown Automotive Engine Upper Gasket SetFrom $6.49
- Engine Upper Gasket Set
- California Residents: WARNING
4
Omix-ADA Cylinder Heads
Omix-Ada Cylinder HeadFrom $582.99
- Direct OE replacement built to the original specifications
- Complete Cylinder Head
- For use with aluminum valve cover engines
- Limited five year Manufacturer's warranty
- California Residents: WARNING
5
Omix-ADA Engine Gasket Sets
Omix-Ada Engine Gasket SetFrom $31.99
- Engine Gasket Set
- California Residents: WARNING
5
Crown Automotive Engine Lower Gasket Set
Crown Automotive Engine Lower Gasket SetFrom $17.99
- Engine Lower Gasket Set
- California Residents: WARNING
6
6
Crown Automotive Oil Filter
Crown Automotive Oil FilterFrom $4.99
- Engine Oil Filter
- California Residents: WARNING
7
Crown Automotive Engine Oil Pump
Crown Automotive Engine Oil PumpFrom $28.99
- Engine Oil Pump
- California Residents: WARNING
7
Crown Automotive Oil Pump Gasket
Crown Automotive Oil Pump GasketFrom $0.89
- Oil Pump Gasket
- Oil pump to block
- California Residents: WARNING
7
8
Crown Automotive Engine Oil Pan Gasket
Crown Automotive Engine Oil Pan GasketFrom $2.99
- Engine Oil Pan Gasket
- California Residents: WARNING
9
10
Omix-ADA Oil Pan Drain Plugs
Omix-Ada Oil Pan Drain PlugFrom $1.99
- Oil Pan Drain Plug
- California Residents: WARNING
10
Crown Automotive Oil Pan Drain Plug Washer
Crown Automotive Oil Pan Drain Plug WasherFrom $1.79
- Oil Pan Drain Plug Washer
- California Residents: WARNING
11
Crown Automotive Valve Cover Grommet
Crown Automotive Valve Cover Grommet
5.0
5.0
(1)
From $1.99
- Valve Cover Grommet
- California Residents: WARNING
11
Omix-ADA Valve Cover Grommets
Omix-Ada Valve Cover GrommetFrom $1.99
- Valve Cover Grommet
- California Residents: WARNING
12
Crown Automotive Engine Piston And Pin
Crown Automotive Engine Piston And PinFrom $41.99
- Engine Piston And Pin
- No Connecting Rod Included
- California Residents: WARNING
12
12
Omix-ADA Piston Ring Sets
Omix-Ada Piston Ring SetFrom $12.99
- Piston Ring Set
- California Residents: WARNING
13
Crown Automotive Engine Piston Ring Set
Crown Automotive Engine Piston Ring SetFrom $14.99
- Engine Piston Ring Set
- California Residents: WARNING
14
Crown Automotive Connecting Rod
Crown Automotive Connecting RodFrom $31.97
- Connecting Rod
- California Residents: WARNING
15
Crown Automotive Connecting Rod Bolt
Crown Automotive Connecting Rod BoltFrom $3.99
- Connecting Rod Bolt
- California Residents: WARNING
16
Omix-ADA Main Engine Bearing Sets
Omix-Ada Main Engine Bearing SetFrom $64.99
- Main Engine Bearing Set
- California Residents: WARNING
16
Crown Automotive Crankshaft Main Bearing Set
Crown Automotive Crankshaft Main Bearing SetFrom $57.99
16
17
17
Crown Automotive Crankshaft Bearing
Crown Automotive Crankshaft BearingFrom $8.09
- Oversized crankshaft thrust bearing
- .010 inch
- California Residents: WARNING
18
Omix-ADA Connecting Rod Bearings
Omix-Ada Connecting Rod BearingFrom $8.99
- Connecting Rod Bearings
- California Residents: WARNING
18
Crown Automotive Connecting Rod Bearing Set
Crown Automotive Connecting Rod Bearing SetFrom $21.99
- Connecting Rod Bearing Set
- California Residents: WARNING
18
Crown Automotive Connecting Rod Bearing
Crown Automotive Connecting Rod BearingFrom $7.19
- Connecting Rod Bearing
- California Residents: WARNING
19
Omix-ADA Camshaft Kits
Omix-Ada Camshaft KitFrom $213.99
- Camshaft and Lifter Kit
- California Residents: WARNING
19
20
Omix-ADA Camshaft Bearings
Omix-Ada Camshaft BearingFrom $13.99
- Camshaft Bearings
- California Residents: WARNING
20
Crown Automotive Camshaft Bearing Set
Crown Automotive Camshaft Bearing SetFrom $16.99
- Camshaft Bearing Set
- California Residents: WARNING
21
Crown Automotive Expansion Plug
Crown Automotive Expansion PlugFrom $1.99
- Expansion Freeze Plug
- California Residents: WARNING
21
Crown Automotive Camshaft Plug
Crown Automotive Camshaft PlugFrom $2.99
- Camshaft Plug
- 2-9/64 inch diameter
- Camshaft Plug
- California Residents: WARNING
22
Crown Automotive Camshaft Expansion Plug
Crown Automotive Camshaft Expansion PlugFrom $1.99
- Camshaft Expansion Plug
- 1-1/2 inch diameter
- California Residents: WARNING
22
Crown Automotive Oil Hole Plug
Crown Automotive Oil Hole PlugFrom $1.99
- Oil Hole Plug
- California Residents: WARNING
24
24
Crown Automotive Intake Valve
Crown Automotive Intake ValveFrom $6.99
- Intake Valve
- California Residents: WARNING
25
Omix-ADA Exhaust Valves
Omix-Ada Exhaust ValveFrom $9.99
- Exhaust Valve
- California Residents: WARNING
25
Crown Automotive Exhaust Valve
Crown Automotive Exhaust ValveFrom $7.99
- Exhaust Valve
- California Residents: WARNING
26
Crown Automotive Valve Stem Seal
Crown Automotive Valve Stem SealFrom $0.99
- Valve Stem Seal
- Sold Individually
- California Residents: WARNING
26
Omix-ADA Intake Valve Stem Seals
Omix-Ada Intake Valve Stem SealFrom $5.99
- Intake Valve Stem Seal
- California Residents: WARNING
27
Crown Automotive Valve Spring Retainer Keeper
Crown Automotive Valve Spring Retainer KeeperFrom $0.99
- Valve Spring Retainer Keeper
- 6-2 with Valve rotators
- Exhaust valves
- California Residents: WARNING
28
Crown Automotive Rocker Arms
Crown Automotive Rocker ArmsFrom $5.99
- Rocker Arm
- California Residents: WARNING
28
Omix-ADA Rocker Arm Kits
Omix-Ada Rocker Arm KitFrom $29.99
- Rocker Arm Kit
- California Residents: WARNING
28
28
29
Omix-ADA Rocker Arm Pivots
Omix-Ada Rocker Arm PivotFrom $2.99
- Rocker Arm Pivot
- California Residents: WARNING
29
Crown Automotive Rocker Arm Pivots
Crown Automotive Rocker Arm PivotsFrom $1.79
- Rocker Arm Pivot
- California Residents: WARNING
30
Omix-ADA Rocker Arm Brackets
Omix-Ada Rocker Arm BracketFrom $10.99
- Rocker Arm Bracket
- F-Head engine
- California Residents: WARNING
30
Omix-ADA Rocker Arm Bridges
Omix-Ada Rocker Arm BridgeFrom $3.99
- Rocker Arm Bridge
- California Residents: WARNING
30
Crown Automotive Rocker Arm Bridges
Crown Automotive Rocker Arm BridgesFrom $3.99
- Rocker Arm Bridge
- California Residents: WARNING
30
32
Crown Automotive Rocker Arm Pivot Bolt
Crown Automotive Rocker Arm Pivot BoltFrom $1.99
- Rocker Arm Pivot Bolt
- California Residents: WARNING
33
Crown Automotive Valve Springs
Crown Automotive Valve SpringFrom $0.99
- Valve Spring
- California Residents: WARNING
34
34
Crown Automotive Valve Lifter
Crown Automotive Valve LifterFrom $6.97
- Valve Lifter
- Sold individually
- California Residents: WARNING
35
Crown Automotive Push Rod
Crown Automotive Push RodFrom $1.99
- Push Rod
- Sold individually
- California Residents: WARNING
35
36
Dorman Timing Cover Kit
Dorman Timing Cover KitFrom $60.99
- Includes gasket
- Aluminum material
- California Residents: WARNING
36
Omix-ADA Timing Chain Covers
Omix-Ada Timing Chain CoverFrom $60.99
- Timing Chain Cover
- California Residents: WARNING
36
Crown Automotive Timing Covers
Crown Automotive Timing CoverFrom $42.97
- Timing Cover
- California Residents: WARNING
36
37
Crown Automotive Timing Cover Gasket
Crown Automotive Timing Cover GasketFrom $2.99
- Timing Cover Gasket
- California Residents: WARNING
37
Omix-ADA Timing Cover Gasket Sets
Omix-Ada Timing Cover Gasket SetFrom $4.99
- Timing Cover Gasket Set
- California Residents: WARNING
38
Crown Automotive Crankshaft Seal
Crown Automotive Crankshaft SealFrom $1.99
- Crankshaft Seal
- California Residents: WARNING
38
Omix-ADA Crankshaft Oil Seals
Omix-Ada Crankshaft Oil SealFrom $0.99
- Crankshaft Oil Seal
- California Residents: WARNING
38
38
Omix-ADA Timing Cover Oil Seals
Omix-Ada Timing Cover Oil SealFrom $5.99
- Timing Cover Oil Seal
- California Residents: WARNING
39
Crown Automotive Timing Chain Guide
Crown Automotive Timing Chain GuideFrom $4.99
- Timing Chain Guide
- California Residents: WARNING
39
Omix-ADA Timing Chain Guides
Omix-Ada Timing Chain GuideFrom $7.99
- Timing Chain Guide
- California Residents: WARNING
40
Omix-ADA Timing Chain Tensioners
Omix-Ada Timing Chain TensionerFrom $28.99
- Timing Chain Tensioner
- California Residents: WARNING
40
Crown Automotive Timing Chain Tensioner
Crown Automotive Timing Chain TensionerFrom $9.99
- Timing Chain Tensioner
- California Residents: WARNING
41
Crown Automotive Engine Timing Chain
Crown Automotive Engine Timing ChainFrom $12.99
- Engine Timing Chain
- California Residents: WARNING
41
41
Crown Automotive Timing Kit
Crown Automotive Timing KitFrom $49.97
- Timing Kit
- California Residents: WARNING
41
42
Omix-ADA Camshaft Gear/Sprockets
Omix-Ada Camshaft Gear/SprocketFrom $17.99
- Camshaft Gear/Sprocket
- California Residents: WARNING
42
Crown Automotive Camshaft Gear
Crown Automotive Camshaft GearFrom $22.99
- Camshaft Gear
- California Residents: WARNING
42
Crown Automotive Camshaft Sprocket
Crown Automotive Camshaft SprocketFrom $19.99
- Camshaft Sprocket
- California Residents: WARNING
43
43
Omix-ADA Crankshaft Gear/Sprockets
Omix-Ada Crankshaft Gear/SprocketFrom $12.99
- Crankshaft Gear/Sprocket
- California Residents: WARNING
44
Crown Automotive Harmonic Balancers
Crown Automotive Harmonic BalancerFrom $0.89
- Crown Automotive Harmonic Balancer
- California Residents: WARNING
45
Crown Automotive Oil Slingers
Crown Automotive Oil SlingerFrom $2.99
- Oil Slinger
- NP231, NP242 transfer case
- California Residents: WARNING
46
Omix-ADA Pilot Bushings
Omix-Ada Pilot BushingFrom $3.99
- Pilot Bushing
- California Residents: WARNING
46
Crown Automotive Clutch Pilot Bearings
Crown Automotive Pilot BearingFrom $3.99
- Pilot Bearing
- California Residents: WARNING
48
Crown Automotive Flywheel Ring Gear
Crown Automotive Flywheel Ring GearFrom $20.69
- Flywheel Ring Gear
- California Residents: WARNING
49
Omix-ADA Flex Plates
Omix-Ada Automatic FlywheelsFrom $40.06
- Replacement flex plates
- Omix-ADA proudly offers high-quality replacement parts for your Jeep vehicle that always meet or exceed OE standards
- California Residents: WARNING
49
Crown Automotive Auto Trans Flexplate
Crown Automotive Auto Trans FlexplateFrom $41.39
- Automatic Transmission Flexplate
- California Residents: WARNING
50
Omix-ADA Exhaust Manifolds
Omix-Ada Exhaust ManifoldFrom $91.99
- Exhaust Manifold
- State Legal: 49 State
- In California, this part may not be used upon a highway and may only be used for race purposes
- California Residents: WARNING
The TJ Wrangler 2.5 4 cylinder engine was the result of a three year development project by American Motors to engineer a Jeep-specific system that would combine off-road performance and durability with lightweight efficiency, and it delivered. But even the best-maintained machine is bound to need a few tune-ups and repairs along the road. At 4 Wheel Parts you'll find a full suite of top-quality replacement parts, from valve cover grommets and oil pan plugs to pistons and pins. For a quick overview, check out our Jeep 2.5 engine diagram.
The Value of Good Maintenance
The engine is the beating heart of your machine. In addition to staying on top of routine maintenance, reacting quickly to fix leaks and repair damaged parts is crucial: especially when your rig is a rough-riding Jeep.
Avoiding Engine Leaks
Oil leaks are one of the most common engine issues, and Jeeps are notorious for "marking their spot". Most 2.5 and 4.0L systems begin to develop oil leaks at around 100-150K miles. While plenty of Jeep owners resign themselves to perpetual dripping, neglecting a faulty seal is always a gamble. A small leak can become a big one in the blink of an eye when treading rugged terrain, and a sudden drop in oil levels starves the engine, leading to potentially catastrophic damage. In addition to replacing your filter with each oil change, it's important to keep a close eye on the integrity of all engine seals.
Small Parts, Big Jobs
Every part of your Jeep engine has been precisely designed and positioned to perform an important function. As with leaks, damaged or misaligned parts can only get worse, and can easily lead to even more devastating problems.
Easy Ordering and Installation Expertise
Track down exactly the part you need in seconds using the search bar or the Jeep 4.0 engine exploded view to order online, or visit us at one of our 60+ locations across North America and let one of our experienced technicians handle installation.
The Value of Good Maintenance
The engine is the beating heart of your machine. In addition to staying on top of routine maintenance, reacting quickly to fix leaks and repair damaged parts is crucial: especially when your rig is a rough-riding Jeep.
Avoiding Engine Leaks
Oil leaks are one of the most common engine issues, and Jeeps are notorious for "marking their spot". Most 2.5 and 4.0L systems begin to develop oil leaks at around 100-150K miles. While plenty of Jeep owners resign themselves to perpetual dripping, neglecting a faulty seal is always a gamble. A small leak can become a big one in the blink of an eye when treading rugged terrain, and a sudden drop in oil levels starves the engine, leading to potentially catastrophic damage. In addition to replacing your filter with each oil change, it's important to keep a close eye on the integrity of all engine seals.
Small Parts, Big Jobs
Every part of your Jeep engine has been precisely designed and positioned to perform an important function. As with leaks, damaged or misaligned parts can only get worse, and can easily lead to even more devastating problems.
Easy Ordering and Installation Expertise
Track down exactly the part you need in seconds using the search bar or the Jeep 4.0 engine exploded view to order online, or visit us at one of our 60+ locations across North America and let one of our experienced technicians handle installation.
