We carry the largest selection of Jeep 4.2L 258ci engine replacement parts around! If you are looking for OEM Jeep replacement engine parts or want to upgrade your 4.2L 258ci engine we have everything that you will need!

1 Crown Automotive RT35005 Plastic Valve Cover Kit for 81-86 CJ Series with 4.2L 258c.i. 6 Cylinder Engine - Plastic Kit 51104.00.07 $122.99
Crown Automotive RT35004 Aluminum Valve Cover for 81-86 Jeep® CJ Series with 4.2L 258c.i. 6 Cylinder Engine - Plain Aluminum 51104.04.07 $130.77
Crown Automotive RT35005 Valve Cover in Black Aluminum for 81-86 Jeep® CJ Series with 4.2L 6 Cylinder Engine - Black Aluminum 51104.02.07 $114.99
2 Crown Automotive J8053050 Valve Cover Gasket for 81-86 Jeep® CJ Series with 4.2L 258c.i. 6 Cylinder Engine - Layered Foam Rubber 51100.53 $25.38
Crown Automotive J8993317 RTV Silicone Gasket Sealant - RTV Silicone 52152.03 $6.99
3 Crown Automotive J3237756 Cylinder Head Gasket for 72-90 Jeep® Vehicles with 4.2L 258c.i. 6 Cylinder Engine 51100.0111 $12.00
4 Crown Automotive 83502384 Upper Valve Grind Gasket Set for 74-90 Jeep® Vehicles with 4.2L 258c.i. 6 Cylinder Engine 51100.02 $36.92
5 Crown Automotive J8125722 Lower Gasket Set for 75-90 Jeep® Vehicles with 4.2L 6 Cylinder Engine & 87-90 with 4.0L 6 Cylinder Engine 51002.00 $24.62
6 K&N HP-2003 Wrench Off Oil Filter for 73-82 Jeep® CJ-5, CJ-6, CJ-7, CJ-8 Scrambler & 70-81 Wagoneer with 6 or 8 Cylinder Engines - AFTERMARKET UPGRADE 51007.54 $11.46
K&N HP-1007 Wrench Off Oil Filter for 81-86 Jeep® Vehicles with 4.2L I-6 or 5.9L V8 Engines - AFTERMARKET UPGRADE 51007.50 $11.46
K&N HP-2007 Wrench Off Oil Filter for 87-90 Jeep® Wrangler YJ, Cherokee XJ & Comanche MJ with 2.5L I-4 or 4.0L & 4.2L I-6 Cylinder Engines - AFTERMARKET UPGRADE 51007.52 $11.46
7 Crown Automotive J3181340 Oil Pump & Screen for 72-80 Jeep® Vehicles with 4.2L 258c.i. 6 Cylinder Engine - Includes Inlet Tube 51004.0017 $146.15
Crown Automotive J3242141 Oil Pump for 81-90 Jeep® Vehicles with 4.2L 258c.i. 6 Cylinder Engine - Includes Inlet Tube 51004.0012 $184.62
8 Crown Automotive J3243152 Oil Pan for 72-90 Jeep® CJ Series & Wrangler YJ with 4.2L 6 Cylinder Engine 51009.01 $146.15
Crown Automotive 83504662 Oil Pan Gasket Set for 72-91 Jeep® Vehicles with 4.0L or 4.2L 6 Cylinder Engine - Cork & Rubber Set 51002.50 $9.00
Crown Automotive 53007568 1 Piece Oil Pan Gasket for 87-06 Jeep® Vehicles with 4.0L 6 Cylinder Engine & 72-90 Jeep® Vehicles with 4.2L 6 Cylinder Engine - 1 Piece Silicone 51002.5005 $27.99
9 Crown Automotive 33001016 Oil Filler Cap for 83-93 Jeep® Vehicles with Carbureted 2.5L 4 Cylinder Engine, 81-90 with 4.2L 6 Cylinder Engine & 87-90 with 4.0L 6 Cylinder Engine 51101.03 $2.69
10 Crown Automotive J3206696 Oil Pan Plug for 72-84 Jeep® Vehicles with 4.2L 258c.i. 6 Cylinder Engine & 74-91 Vehicles with 5.0L 304c.i. or 5.9L 360c.i. 8 Cylinder Engine - 1/2" x 20 51009.0055 $3.54
Crown Automotive 83501425 Oil Pan Drain Plug for 86-91 Jeep® Vehicles with 2.5L Engine, 85-90 Jeep® Vehicles with 4.2L Engine & 87-91 Jeep® Vehicles with 4.0L Engine - Plug & Gasket, Metric Threads 51009.50 $1.99
11 Crown Automotive J8134400 PCV Valve Grommet for 81-86 Jeep® Vehicles with 4.2L 258c.i. 6 Cylinder Engine - .48" I.D. 51309.99 $0.99
Crown Automotive J3225627 Valve Cover Grommet for 76-86 Jeep® Vehicles with 4.2L 258c.i. 6 Cylinder Engine - .45" I.D. 51309.98 $0.89
Crown Automotive 53000957 Valve Cover Grommet for 87-90 Jeep® Vehicles with 4.2L 258c.i. 6 Cylinder Engine & 83-93 Vehicles with 2.5L Carbureted 4 Cylinder Engine - .72" I.D. 51309.0102 $1.49
12 Crown Automotive J8134441 Standard Piston & Pin for 79-90 Jeep® Vehicles with 4.2L 258c.i. 6 Cylinder Engine 51015.0006 $55.38
13 Crown Automotive J8121683 Standard Ring Set for 72-90 Jeep® Vehicles with 4.2L 6 Cylinder 258c.i. 6 Cylinder Engine - For 6 Pistons 51015.1000 $80.00
Crown Automotive J8121684 Engine Piston Ring Set (+.010") for 72-90 Jeep® Vehicles with 4.2L 258c.i. 6 Cylinder Engine - For 6 Pistons 51015.1001 $60.00
14 Crown Automotive J3237812 Connecting Rod for 72-90 Jeep® Vehicles with 4.2L 258c.i. 6 Cylinder Engine 51012.0003 $38.46
15 Crown Automotive J4486626 Connecting Rod Bolt with Nut for 83-02 Jeep Vehicles with 2.5L Engine, 72-90 with 4.2L Engine, 87-06 with 4.0L Engine & 71-91 with 5.2L or 5.9L Engine 51012.0900 $3.99
16 Crown Automotive 8133252K6 Engine Main Bearing Set for 87-90 Jeep® Vehicles with 4.0L 6 Cylinder Engine & 72-90 with 4.2L 6 Cylinder Engine - Standard With Offset Tabs 55125.0304 $80.00
17 Crown Automotive J8133253 Crankshaft Thrust Engine Bearing for 72-04 Jeep® Applications with 2.5L, 4.0L & 4.2L Engines 55125.0303 $11.05
18 Crown Automotive 83500300 Standard Size Connecting Rod Bearing for 72-90 Jeep® Vehicles with 4.2L Engine, 83-02 Vehicles with 2.5L Engine & 71-91 Vehicles with 5.2L or 5.9L V8 Engine - Standard Size 51011.0000 $7.19
Crown Automotive 83500301 Under Size Connecting Rod Bearing for 71-02 Jeep® Vehicles with 2.5L 4 Cylinder, 4.0L 6 Cylinder, 4.2L 6 Cylinder, 5.0L & 5.9L V-8 Engines - .010" Undersize 51011.0001 $6.92
19 Crown Automotive J3172313 Camshaft Plug for 71-05 Jeep® Vehicles with 2.5L 4 Cylinder, 4.2L 6 Cylinder & 4.0L 6 Cylinder Engine - 2-9/64" Diameter 51001.9000 $1.79
20 Crown Automotive J3105394 Oil Hole Plug for 87-02 Jeep® Vehicles with 2.5L Engine, 72-90 Vehicles with 4.2L Engine & 87-06 Vehicles with 4.0L Engine - 2" Diameter 51001.9001 $1.79
21 Crown Automotive 33004107 Crankshaft Sprocket for 72-90 Jeep® Vehicles with 4.2L 258c.i. 6 Cylinder Engine 55125.0800 $38.46
22 Crown Automotive J3236726 Pilot Bushing for 80-86 Jeep® CJ Series with 4.2L, 304ci & 360ci V-8 Engines - Bushing Type 52008.06 $4.49
Crown Automotive 33004041 Pilot Bushing for 87-91 Jeep® Vehicles with 4.0L or 4.2L 6 Cylinder Engine - Bearing Type 52008.00 $5.99
23 Crown Automotive J3179741 Flywheel Ring Gear for 72-90 Jeep® Vehicles with 4.2L 6 Cylinder Engine & Manual Transmission & 87-93 Vehicles with 4.0L 6 Cylinder Engine & Manual Transmission - With Manual Transmission 51005.50 $22.31
AMS Automotive 167001 Engine Flywheel for 82-87 Jeep® CJ & YJ with 4.2L Engine - With Manual Transmission 82-86 CJ Series 82-87 SJ Series 1987 Wrangler YJ 52027.000.07 $69.19
Crown Automotive 33002672 Flywheel Assembly for 87-90 Jeep® Cherokee XJ with 4.0L 6 Cylinder Engine & 88-90 Wrangler YJ with 4.2L 6 Cylinder Engine - 88-90 Wrangler YJ 52027.0007 $107.69
Crown Automotive J3232138 Flex Plate for 81-86 Jeep® CJ Series, 81-83 SJ & J Series & 1987 Wrangler YJ with 999 Automatic Transmission - Applications with 999 Transmission 81-86 CJ Series 81-83 SJ Series 1987 Wrangler YJ 52023.02 $44.62
Crown Automotive 33004359 Flex Plate for 88-90 Jeep® Vehicles with 4.2L 258c.i. 6 Cylinder Engine - Automatic Transmission Applications Only 52023.0006 $60.00
25 Crown Automotive 4778126 Rear Main Crankshaft Seal Kit for 87-99 Jeep® Vehicles with 4.0L 6 Cylinder Engine & 72-90 Vehicles with 4.2L 6 Cylinder Engine 51002.0703 $9.89
26 Crown Automotive J8133009 Camshaft for 81-90 Jeep® Vehicles with 4.2L 258c.i. 6 Cylinder Engine 51001.0907 $110.40
27 Crown Automotive J3205711 Camshaft Bearing Set for 81-04 Jeep® Vehicles with 2.5L, 4.0L or 4.2L Engine 51011.0200 $32.31
Crown Automotive J3208985 Camshaft Bearing Set (.010 Oversized) for 83-98 Jeep® with 2.5L 4 Cylinder Engine, 72-90 with 4.2L 6 Cylinder Engine & 87-98 with 4.0L 6 Cylinder Engine 51011.0201 $32.31
28 Crown Automotive J3240768 Intake Valve for 81-90 Jeep® Vehicles with 4.2 258c.i. 6 Cylinder Engine & 81-83 CJ Series with 5.0L 304c.i. V-8 Engine 51104.0903 $14.62
Crown Automotive J3240167 Intake Valve (.015" Oversize) for 81-90 Jeep® with 4.2L 258c.i. 6 Cylinder Engine 51104.0908 $18.46
29 Crown Automotive J3240767 Exhaust Valve for 81-90 Jeep® Vehicles with 4.2L 258c.i. 6 Cylinder Engine & 81-83 CJ Series Vehicles with 5.0L 304c.i. V-8 Engine 51104.0094 $16.92
Crown Automotive J3240164 Exhaust Valve (.015" Oversized) for 81-90 Jeep® Vehicles with 4.2L 258c.i. 6 Cylinder Engine 51104.0097 $16.92
Crown Automotive J3218977 Valve Stem Seal (.015" Oversized) for 72-90 Jeep® with 4.2L 258c.i. 6 Cylinder Engine & 74-91 with 5.0L or 5.9L V-8 Engine 51104.9005 $0.89
31 Crown Automotive J3180458 Valve Retainer Lock for 81-90 Jeep® Vehicles with 4.2L 258c.i. 6 Cylinder Engine & 1981 Vehicles with 5.0L 304c.i. V-8 Engine - Except "VAM" Engines 51104.9006 $1.08
32 Crown Automotive J3228192 Valve Spring for 77-90 Jeep® Vehicles with 4.2L 258c.i. 6 Cylinder Engine & 78-91 Vehicles with 5.0L or 5.9L V-8 Engine - Except "VAM" Engines 51103.0207 $7.19
33 Crown Automotive J3223888 Rocker Arm for 75-82 Jeep® Vehicles with 4.2L 258c.i. 6 Cylinder Engine - 2.00" Long. Conical. 51103.0208 $4.92
Crown Automotive J3242393 Rocker Arm for 83-02 Jeep® Vehicles with 2.5L 4 Cylinder Engine, 83-90 Vehicles with 4.2L Engine & 87-06 Vehicles with 4.0L 6 Cylinder Engine 51103.0205 $4.49
34 Crown Automotive 3235090 Rocker Arm Pivot for 83-02 Jeep® Vehicles with 2.5L Engine, 80-90 Vehicles with 4.2L Engine, 87-06 Vehicles with 4.0L Engine & 80-91 Vehicles with 5.0L or 5.9L Engine 51103.0201 $1.99
35 Crown Automotive J3236513 Non-Studded Rocker Arm Pivot Bridge for 83-02 Jeep® Vehicles with 2.5L Engine, 80-90 with 4.2L Engine, 87-06 with 4.0L Engine & 80-91 with 5.0 or 5.9L Engine - Except "VAM" Engine. No Stud Included. 51104.53 $1.79
Crown Automotive J3237851 Studded Rocker Arm Bridge for 81-86 Jeep® Vehicles with 4.2L 258c.i. 6 Cylinder Engine - Except "VAM" Engine. Includes Stud. 51104.51 $2.99
36 Crown Automotive 3236513K Rocker Arm Pivot Kit for 83-02 Jeep® Vehicles with 2.5L Engine, 80-90 with 4.2L Engine, 87-06 with 4.0L Engine & 80-91 with 5.0L or 5.9L Engine 51103.0202 $3.59
37 Crown Automotive J8120512 Rocker Arm Pivot Bolt for 74-91 Jeep® Vehicles with 5.0L or 5.9L Engine, 72-90 with 4.2L Engine, 87-06 with 4.0L Engine & 83-02 with 2.5L Engine 51103.0203 $0.89
38 Crown Automotive J3222276 Valve Lifter for 83-02 Jeep® Vehicles with 2.5L Engine, 72-90 with 4.2L Engine, 87-01 with 4.0L Engine & 71-91 with 5.0L & 5.9L Engines - Except "VAM" Engine 51001.0200 $6.99
39 Crown Automotive 33002986 Push Rod for 81-88 Jeep® Vehicles with 4.2L 6 Cylinder Engine & 87-04 Vehicles with 4.0L 6 Cylinder Engine - Except "VAM" Engine 51102.0009 $1.99
40 Crown Automotive 53020233 Timing Cover for 72-90 Jeep® Vehicles with 4.2L Engine, 87-92 with 4.0L Engine & 83-93 with 2.5L Engine 51010.0004 $49.23
41 Crown Automotive J8129097 Timing Case Cover Gasket Set for 74-90 Jeep® Vehicles with 4.2L 6 Cylinder Engine, 87-91 with 4.0L 6 Cylinder Engine & 83-91 with 2.5L 4 Cylinder Engine 51010.98 $5.39
42 Crown Automotive J3224704 Crankshaft Front Seal for 83-02 Jeep® Vehicles with 2.5L 4 Cylinder Engine, 72-90 Vehicles with 4.2L 6 Cylinder Engine & 87-06 Vehicles with 4.0L 6 Cylinder Engine 55125.0901 $1.79
43 Crown Automotive J3225187 Timing Case Cover Gasket for 87-06 Jeep® Vehicles with 4.0L 6 Cylinder Engine & 72-90 Vehicles with 4.2L 6 Cylinder Engine 51010.0095 $1.85
44 Crown Automotive J3240502 Timing Chain for 72-90 Jeep® Vehicles with 4.2L 258c.i. 6 Cylinder Engine 51006.1001 $15.08
45 Crown Automotive J3206693 Camshaft Timing Gear for 72-90 Jeep® Vehicles with 4.2L 258c.i. 6 Cylinder Engine 51001.1001 $13.49
46 Crown Automotive 8126681K Timing Chain Kit for 72-90 Jeep® Vehicles with 4.2L 258c.i. 6 Cylinder Engine 51006.0012 $53.85
47 Crown Automotive J3225201 Vibration Damper for 75-90 Jeep® Vehicles with 4.2L 258c.i. 6 Cylinder Engine & V-Belts 27800.01 $64.62
48 Crown Automotive J3173076 Oil Slinger for 83-00 Jeep® Vehicles with 2.5L 4 Cylinder Engine, 72-90 with 4.2L 6 Cylinder Engine & 87-00 with 4.0L 6 Cylinder Engine 55125.0400 $1.79
49 Crown Automotive J8124999 Exhaust Manifold for 72-79 Jeep® CJ Series with 4.2L 6 Cylinder Engine 27601.02.07 $146.15
Crown Automotive J3237427 Exhaust Manifold for 81-90 Jeep® Vehicles with 4.2L 258c.i. 6 Cylinder Engine 27601.01.07 $169.23
50 Crown Automotive 17451.09 Intake To Exhaust Manifold Gasket for 72-79 Jeep® CJ Series with 4.2L 258c.i. 6 Cylinder Engine 51100.1009 $2.35
51 Crown Automotive J3242855 Exhaust Manifold Gasket for Jeep® 72-90 Jeep® CJ Series, Wrangler YJ & 81-86 SJ & J Series with 4.2L 258c.i. 6 Cylinder Engine 51100.1004 $8.99
52 Crown Automotive J8128488 Front Engine Mount for 77-90 Jeep® Vehicles with 4.2L 258c.i. 6 Cylinder Engine - CJ & SJ Applications 56003.0015 $11.69
Crown Automotive 52040267 Motor Mount for 87-99 Jeep® Wrangler YJ & TJ with 4.0L or 4.2L 6 Cylinder Engine & 87-01 Cherokee XJ with 4.0L 6 Cylinder Engine - Wrangler YJ Applications 56003.0016 $11.99
53 Crown Automotive J1370910 Transmission Mount for 83-86 Jeep® CJ Series with 2.5L 4 Cylinder Engine, 72-86 CJ Series & 72-90 SJ & J Series with 4.2L 258c.i. 6 Cylinder Engine - CJ & SJ Applications 56003.0037 $9.89
Crown Automotive 52002625 Transmission Mount for 87-95 Jeep® Wrangler YJ with 2.5L, 4.0L or 4.2L Engine - Wrangler YJ Applications 56003.0024 $13.85
54 Crown Automotive J0945266 Transfer Case Insulator Bushing for 83-86 Jeep® CJ-7 with 2.5L Engine, 87-95 Wrangler YJ with 2.5L Engine, 62-90 Vehicles with 4.2L, 5.0L, 5.9L Engine or Dana 20 - Manual Transmission Applications Only 56003.0039 $1.79
55 Crown Automotive J5358879 Transfer Case Pin for 83-95 Jeep® CJ-7 & Wrangler YJ with 2.5L Engine, 76-90 CJ Series, Wrangler YJ & SJ with 4.2L Engine & 76-90 Vehicles with 5.0L or 5.9L Engine - Manual Transmission Applications Only 56003.50 $5.39
56 Crown Automotive 8128488K Engine & Transmission Mount Kit for 72-86 Jeep® CJ with 6 Cylinder Engine - CJ Series 56003.01 $29.99
Plastic Valve Cover Kit Valve Cover Gasket Cylinder Head Gasket Upper Valve Grind Gasket Set Lower Gasket Set K&N Wrench Off Oil Filter Oil Pump & Screen Oil Pan Oil Pan Gasket Set Oil Filler Cap Oil Pan Plug PCV Valve Grommet Standard Piston & Pin Standard Ring Set Connecting Rod Connecting Rod Bolt with Nut Engine Main Bearing Set Crankshaft Thrust Engine Bearing Standard Size Connecting Rod Bearing Camshaft Plug Oil Hole Plug Crankshaft Sprocket Crankshaft Sprocket Crankshaft Sprocket AMS Automotive Pilot Bushing Flywheel Ring Gear Engine Flywheel Flex Plate Rear Main Crankshaft Seal Kit Camshaft Camshaft Bearing Set Intake Valve Exhaust Valve Valve Stem Seal (.015" Oversized) Valve Retainer Lock Valve Spring Rocker Arm Rocker Arm Pivot Non-Studded Rocker Arm Pivot Bridge Rocker Arm Pivot Kit Rocker Arm Pivot Bolt Valve Lifter Push Rod Timing Cover Timing Case Cover Gasket Set Crankshaft Front Seal Crankshaft Front Seal Timing Case Cover Gasket Timing Chain Camshaft Timing Gear Timing Chain Kit Vibration Damper Oil Slinger Exhaust Manifold Intake To Exhaust Manifold Gasket Exhaust Manifold Gasket Front Engine Mount Transmission Mount Transfer Case Insulator Bushing Transfer Case Pin Engine & Transmission Mount Kit