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.
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Jeep Parts » Jeep Replacement Parts » Jeep Engine Parts » Replacement 2.5L 4 Cylinder Engine Parts
2.5L 4 Cylinder Parts Exploded View Diagram
#7a #7b

Item # Years Description Comments Part #
1 83/90 Valve Cover   51104 0012
  91/92   w/ Carbureted Engine 51104 0012
2 83/92 Gasket, Valve Cover Cork 51100 0154
  90/02   RTV Silicone 52152 03
3 83/02 Gasket, Cylinder Head   51100 0112
4 83/93 Gasket Set, Upper   51100 04
5 83/91 Gasket Set, Lower   51002 03
  92/02   w/ 1 pc. Pan Gasket 51100 0014
6 83/86 Filter, Engine Oil   51007 0009
  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 51002 5006
  83/02   1 Piece 51002 5007
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 51009 0054
11 83/93 Grommet, Valve Cover .72" I.D. w/ Carbureted engine 51309 0102
  87/93   .45" I.D. w/ Carbureted engine 51309 97
  87/93   2.2mm I.D. w/ Fuel Injection 51309 0100
  94/02     51309 0101
12 83/95 Piston & Pin (each) Standard 51015 0007
  83/95   +.010 “ 51015 0008
  96/02   Standard 51015 0000
13 83/95 Ring Set (for 4 pistons) Standard 51015 1006
14 83/90 Rod, Connecting   51012 0004
15 83/02 Bolt, Connecting Rod includes nut 51012 0900
16 83/02 Main Bearing, SET Standard 55125 0305
  83/90 Main Bearing, SET Standard 55125 0307
17 83/02 Thrust Bearing, Crankshaft Standard (1 needed) 55125 0303
18 83/02 Bearing, Connecting Rod Standard (4 needed) 51011 0000
      .010" Undersize (4 needed) 51011 0001
19 83/93 Camshaft & Lifter Kit   51001 05
20 83/02 Bearing Set, Camshaft Set of 4 51011 0200
  83/98 Bearing Set, .010 Set of 4 - .010" Oversize 51011 0201
21 87/02 Plug, Camshaft 2-9/64" Diameter 51001 9000
22 87/02 Plug, Oil Hole 2" Diameter 51001 9001
23 83/02 Plug, Oil Hole 7/8" Diameter 51001 9002
24 83/90 Valve, Intake, Std. with head marked “ 59 “ 51104 0907
  87/96   with head marked “ 15 “ 51104 0904
  97/02   w/ 3 radius cut grooves 51104 0905
25 87/96   w/ 1 radius cut groove at top 51104 0092
  83/02   w/ 3 radius cut grooves 51104 0095
26 83/02 Seal, Valve Stem Intake 51104 9000
      Exhaust 51104 9001
27 83/90 Lock, Valve retainer w/ 1 square cut groove in center 51104 1001
  87/96   w/ 1 radius cut groove at top 51104 9002
  97/02   w/ 3 radius cut grooves 51104 9003
28 83/02 Rocker Arm   51103 0205
29 83/02 Pivot, Rocker Arm   51103 0201
30 83/02 Bridge, Rocker Arm Pivot   51104 53
31 83/02 Pivot Kit contains 2 pivots & 1 bridge 51103 0202
32 83/02 Bolt, Rocker Arm Pivot   51103 0203
33 88/02   2.00" long, conical 51103 0206
34 83/02 Tappet (Lifter)   51001 0200
35 83/02 Push Rod   51102 0010
36 83/93 Timing Cover   51010 0004
  94/02     51010 01
37 83/91 Gasket & Seal Kit, Timing   51010 98
38 83/02 Seal, Crankshaft Front   55125 0901
39 83/02 Snubber, Timing Chain   51010 0005
40 83/02 Tensioner, Timing Chain   51010 0006
41 83/02 Chain, Timing   51006 03
42 83/02 Sprocket, Camshaft   51001 1005
43 83/02 Sprocket, Crankshaft   51008 1003
44 83/90 Damper, Vibration w/ Serpentine Belt drive 17005 0053
45 83/00 Slinger, Oil   55125 0400
46 83/00 Bearing, Crankshaft Pilot w/ Manual Transmission 52104 0011
47 83/02 Seal, Crankshaft Rear Rear Main Seal 51002 0705
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   17451 1000
51 83/86 Mount, Front CJ’s 56003 0033
  87/90   YJ LEFT & RIGHT 56003 02
  91/95   YJ LEFT 56003 0013
  91/95   YJ RIGHT 56003 04
  97/02   TJ LEFT & RIGHT 56003 0035
  84/96   XJ, MJ RIGHT LHD 56003 0013
  84/90   XJ, MJ LEFT 56003 02
  91/00   XJ, MJ LEFT 56003 0036
52 83/86 Mount, Rear (transmission) CJ’s 56003 0037
  87/95   YJ 56003 0024
  97/02   TJ 56003 0027
  84/90   XJ, MJ AUTOMATIC Transmission 56003 0025
  84/00   XJ, MJ MANUAL Transmission 4WD 56003 0038
  91/00   XJ, w/ All Transmissions 56003 0038
53 84/95 Insulator, Support Bracket XJ, MJ 56003 0028
54 83/95 Insulator CJ’s, YJ 56003 0039
55 83/95 Stud, Insulator CJ’s, YJ 56003 50
56 87/90 Mount Kit YJ only 56003 02
  91/95   YJ only 56003 04

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Throughout this web site all the preceding marks & logos are used for identification purposes only. Quadratec has no affiliation with the Chrysler LLC, MOPAR®, General Motors Company, Ford Motor Company, Suzuki Motor Corporation or Isuzu Motors Limited. It is not implied that any part listed is a product of, or approved by Chrysler LLC, General Motors Company, Ford Motor Company, Suzuki Motor Corporation or Isuzu Motors Limited.

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