Jeep CJ, YJ or TJ Wrangler Series OEM Style Replacement Parts - 2.5L 4 Cylinder Engine Replacement Parts including Valve Covers, Gaskets, Filters, Oil Pump, Oil Filter Cap, Oil Pan Plug, Valve Cover Grommets, Pin and Piston, Ring Set, Connecting Rods, Main Bearing Set, Bearings, Camshaft, Plugs, Intake Valve, Exhaust Valve, Locks, Rocker Arm, Push Rod and more.

If you're restoring or repairing a Jeep CJ, YJ or TJ Wrangler vehicle, check out our high quality OEM style 2.5L 4 Cylinder Engine Replacement Parts.

Home » OEM Style Jeep® Replacement Parts » Engine » 2.5L 4 Cylinder Engine Parts

2.5L 4 Cylinder Parts Exploded View Diagram

Item #	Years	Description	Comments	Part #
1	83/90	Valve Cover		51104 01
	91/92		w/ Carbureted Engine	51104 01

2	83/92	Gasket, Valve Cover	Cork	51100 54
	90/02		RTV Silicone	52152 03

3	83/96	Gasket, Cylinder Head		52449 0492
	97/02			52449 0493

4	83/93	Gasket Set, Upper		51100 04

5	83/91	Gasket Set, Lower		51002 03
	92/02		w/ 1 pc. Pan Gasket	52449 0494

6	83/86	Filter, Engine Oil		52449 0495
	87/93		w/ METRIC Threads	52449 0496
	91/02		w/ SAE Threads	52449 0497

7	83/02	Pump, Oil	Does not include pickup tube	51004 06

7a	83/85	Oil Pump Screen		51004 53
	86/95	Oil Pump Screen		51004 54

7b	ALL	Screen Assembly Tool	for proper installation of screen to oil pump	98000 00

8	83/91	Gasket Set, Oil Pan	Cork and Rubber set	52449 0498
	83/02		1 Piece	52449 0499

9	83/93	Cap, Oil Filler	w/ Carbureted engines	51101 03
	90/02		w/ Fuel Injected engines	51101 00

10	86/91	Plug, Oil Pan	Plug & Gasket, Metric threads	51009 50
	90/02		1 piece, rubber coated, 1/2"-20	52449 0501

11	83/93	Grommet, Valve Cover	.72" I.D. w/ Carbureted engine	52449 0502
	87/93		.45" I.D. w/ Carbureted engine	51309 97
	87/93		2.2mm I.D. w/ Fuel Injection	52449 0503
	94/02			52449 0504

12	83/95	Piston & Pin (each)	Standard	52449 0505
	83/95		+.010 “	52449 0506
	96/02		Standard	52449 0507

13	83/95	Ring Set (for 4 pistons)	Standard	52449 0508

14	83/90	Rod, Connecting		52449 0509

15	83/02	Bolt, Connecting Rod	includes nut	52449 0510

16	83/02	Main Bearing, SET	Standard	52449 0511
	83/90	Main Bearing, SET	Standard	52449 0512

17	83/89	Thrust Bearing, Crankshaft	Standard (1 needed)	52449 0513
	90/02		Standard (1 needed)	52449 0514

18	83/02	Bearing, Connecting Rod	Standard (4 needed)	52449 0515
			.010" Undersize (4 needed)	52449 0516

19	83/93	Camshaft & Lifter Kit		51001 05

20	83/98	Bearing Set, Camshaft	Set of 4	52449 0517
	99/02	Bearing Set, Camshaft	Set of 4	52449 0518
	83/98	Bearing Set, .010	Set of 4 - .010" Oversize	52449 0519

21	87/02	Plug, Camshaft	2-9/64" Diameter	52449 0520

22	87/02	Plug, Oil Hole	2" Diameter	52449 0521

23	83/02	Plug, Oil Hole	7/8" Diameter	52449 0522

24	83/90	Valve, Intake, Std.	with head marked “ 59 “	52449 0523
	87/96		with head marked “ 15 “	52449 0524
	97/02		w/ 3 radius cut grooves	52449 0525

25	87/96		w/ 1 radius cut groove at top	52449 0527
	83/02		w/ 3 radius cut grooves	52449 0528

26	83/02	Seal, Valve Stem	Intake	52449 0529
			Exhaust	52449 0530

27	83/90	Lock, Valve retainer	w/ 1 square cut groove in center	52449 0531
	87/96		w/ 1 radius cut groove at top	52449 0532
	97/02		w/ 3 radius cut grooves	52449 0533

28	83/02	Rocker Arm		51103 06

29	83/02	Pivot, Rocker Arm		52449 0534

30	83/02	Bridge, Rocker Arm Pivot		52449 0535

31	83/02	Pivot Kit	contains 2 pivots & 1 bridge	52449 0536

32	83/02	Bolt, Rocker Arm Pivot		52449 0537

33	88/02		2.00" long, conical	52449 0538

34	83/02	Tappet (Lifter)		52449 0539

35	83/02	Push Rod		52449 0540

36	83/93	Timing Cover		52449 0541
	94/02			51010 01

37	83/91	Gasket & Seal Kit, Timing		51010 97

38	83/02	Seal, Crankshaft Front		52449 0542

39	83/02	Snubber, Timing Chain		52449 0543

40	83/02	Tensioner, Timing Chain		52449 0544

41	83/02	Chain, Timing		51006 03

42	83/02	Sprocket, Camshaft		52449 0545

43	83/02	Sprocket, Crankshaft		52449 0546

44	83/90	Damper, Vibration	w/ Serpentine Belt drive	52449 0547

45	83/00	Slinger, Oil		52449 0548

46	83/00	Bearing, Crankshaft Pilot	w/ Manual Transmission	52449 0549

47	83/02	Seal, Crankshaft Rear	Rear Main Seal	52449 0550

48	83/02	Ring Gear, Flywheel	w/ Manual Transmission	51005 54

49	83/02	Manifold Kit, Exhaust	incl. Heat Shield, Gasket, & Hardware	27601 12

50	83/02	Gasket, Manifold		52449 0551

51	83/86	Mount, Front	CJ’s	52449 0552
	87/90		YJ LEFT & RIGHT	56003 02
	91/95		YJ LEFT	52449 0553
	91/95		YJ RIGHT	56003 04
	97/02		TJ LEFT & RIGHT	52449 0554
	84/96		XJ, MJ RIGHT LHD	52449 0553
	84/90		XJ, MJ LEFT	56003 02
	91/00		XJ, MJ LEFT	52449 0556

52	83/86	Mount, Rear (transmission)	CJ’s	52449 0557
	87/95		YJ	52449 0558
	97/02		TJ	52449 0559
	84/90		XJ, MJ AUTOMATIC Transmission	52449 0560
	84/00		XJ, MJ MANUAL Transmission 4WD	52449 0561
	91/00		XJ, w/ All Transmissions	52449 0561

53	84/95	Insulator, Support Bracket	XJ, MJ	52449 0563

54	83/95	Insulator	CJ’s, YJ	52449 0564

55	83/95	Stud, Insulator	CJ’s, YJ	52449 0565

56	87/90	Mount Kit	YJ only	56003 02

	91/95		YJ only	56003 04

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