Jeep YJ Wrangler 4.2L 6 cylinder Engine Parts - Best Reviews & Prices at 4WP

Jeep YJ Wrangler 4.2L 6 cylinder Engine Parts

Make Sure It Fits Your Vehicle

Factory style replacement 4.2L 258 6 cylinder engine parts for your 1987-95 YJ Wrangler. There's a lot to love about your YJ, including the occasionally controversial square headlights. However, it pays to remember your vehicle's series started way back in model year 1987. Jeep Wrangler value depends on more than quirky vintage charm: it depends on a clean engine. Keep your pre-1991 4.2L inline 6 in good condition with this full selection of parts.

Everything in One Place
Here at 4 Wheel Parts, we listened to customer requests and came up with a simple-to-navigate catalog. Simply take a look at the Jeep 4.2 engine diagram, and then click the number next to the part you need. If you don't see it right away, perform a search or browse the items this category. Pumps, gaskets, cylinder heads, timing chains, valve lifters, engine mounts and much more: All of the YJ engine parts you need are right here.

Quality and Value
Good quality and low prices matter for everything you need, whether it's a 1989 Jeep Wrangler 4.2 intake manifold or a replacement YJ valve cover gasket. That's why we've filled this page with parts that meet or exceed the OEM specs for every 1987-1990 Jeep Wrangler 4.2 engine. In addition, we're completely committed to our price guarantee. We offer one of the best price-match program available anywhere: Order now, and take up to 90 days to find a lower advertised price.

Why Rebuild Your 4.2L YJ Engine?
As many Jeepers have discovered, doing engine work is one of the toughest and most rewarding projects you can undertake. Whether you're giving a longtime off-roading companion some necessary maintenance or fixing up a recent boneyard acquisition, nothing is quite like feeling a defunct block roar back to life after hours of exacting work. Build your YJ back to its original glory with OEM parts, or throw in a few upgrades from our selection of aftermarket components. Qualified orders over $75 get free ground shipping, so order everything you need and get started on your project as soon as possible.

147 Product Groups
  • 1
     Omix-ADA Valve Covers

    Omix-ADA Valve Covers

    Omix-Ada Valve Cover
    5.0 5.0 (1)

    From $115.94

    1
     Crown Automotive Valve Covers

    Crown Automotive Valve Covers

    Crown Automotive Valve Cover
    5.0 5.0 (2)

    From $29.69

    On Sale
    2
     Crown Automotive Valve Cover Gasket

    Crown Automotive Valve Cover Gasket

    Crown Automotive Valve Cover Gasket
    4.0 4.0 (1)

    From $0.89

    On Sale
    2
     Omix-ADA Valve Cover Gasket Kits

    Omix-ADA Valve Cover Gasket Kits

    Omix-Ada Valve Cover Gasket

    From $13.99

    3
     Crown Automotive Head Gasket

    Crown Automotive Head Gasket

    Crown Automotive Head Gasket

    From $10.79

    On Sale
    3
     Omix-ADA Head Gaskets

    Omix-ADA Head Gaskets

    Omix-Ada Head Gasket

    From $12.99

    5
     Crown Automotive Engine Lower Gasket Set

    Crown Automotive Engine Lower Gasket Set

    Crown Automotive Engine Lower Gasket Set

    From $18.89

    On Sale
    6
     Omix-ADA Oil Filters

    Omix-ADA Oil Filters

    Omix-Ada Oil Filter

    From $10.99

    7
     Crown Automotive Engine Oil Pump

    Crown Automotive Engine Oil Pump

    Crown Automotive Engine Oil Pump

    From $130.49

    On Sale
    7
     Omix-ADA Oil Pumps

    Omix-ADA Oil Pumps

    Omix-Ada Oil Pump

    From $117.99

    7
     Crown Automotive Engine Oil Pump Screen

    Crown Automotive Engine Oil Pump Screen

    Crown Automotive Engine Oil Pump Screen

    From $52.19

    On Sale
    8
     Crown Automotive Engine Oil Pans

    Crown Automotive Engine Oil Pans

    Crown Automotive Engine Oil Pan
    5.0 5.0 (1)

    From $107.09

    On Sale
    8
     Omix-ADA Oil Pans

    Omix-ADA Oil Pans

    Omix-Ada Oil Pan

    From $119.99

    8
     Omix-ADA Oil Pan Gaskets

    Omix-ADA Oil Pan Gaskets

    Omix-Ada Oil Pan Gasket

    From $12.99

    9
     Crown Automotive Oil Filler Cap

    Crown Automotive Oil Filler Cap

    Crown Automotive Oil Filler Cap

    From $3.59

    On Sale
    9
     Omix-ADA Oil Caps

    Omix-ADA Oil Caps

    Omix-Ada Oil Cap

    From $12.99

    10
     Crown Automotive Oil Pan Drain Plug

    Crown Automotive Oil Pan Drain Plug

    Crown Automotive Oil Pan Drain Plug

    From $2.69

    On Sale
    10
     Omix-ADA Oil Pan Drain Plugs

    Omix-ADA Oil Pan Drain Plugs

    Omix-Ada Oil Pan Drain Plug

    From $1.99

    11
     Crown Automotive PCV Valve

    Crown Automotive PCV Valve

    Crown Automotive PCV Valve

    From $1.79

    On Sale
    11
     Omix-ADA PCV Valves

    Omix-ADA PCV Valves

    Omix-Ada PCV Valve

    From $16.99

    11
     Omix-ADA Valve Cover Grommets

    Omix-ADA Valve Cover Grommets

    Omix-Ada Valve Cover Grommet

    From $1.99

    11
     Crown Automotive PCV Valve Gasket

    Crown Automotive PCV Valve Gasket

    Crown Automotive PCV Valve Gasket

    From $0.89

    On Sale
    11
     Crown Automotive PCV Valve Elbow

    Crown Automotive PCV Valve Elbow

    Crown Automotive PCV Valve Elbow

    From $1.79

    On Sale
    12
     Omix-ADA Pistons

    Omix-ADA Pistons

    Omix-Ada Piston

    From $101.99

    12
     Crown Automotive Engine Piston And Pin

    Crown Automotive Engine Piston And Pin

    Crown Automotive Engine Piston And Pin

    From $214.19

    On Sale
    13
     Omix-ADA Piston Ring Sets

    Omix-ADA Piston Ring Sets

    Omix-Ada Piston Ring Set

    From $101.99

    13
     Crown Automotive Engine Piston Ring Set

    Crown Automotive Engine Piston Ring Set

    Crown Automotive Engine Piston Ring Set

    From $116.99

    On Sale
    14
     Crown Automotive Connecting Rod

    Crown Automotive Connecting Rod

    Crown Automotive Connecting Rod

    From $29.69

    On Sale
    15
     Crown Automotive Connecting Rod Bolt

    Crown Automotive Connecting Rod Bolt

    Crown Automotive Connecting Rod Bolt

    From $3.59

    On Sale
    16
     Omix-ADA Main Engine Bearing Sets

    Omix-ADA Main Engine Bearing Sets

    Omix-Ada Main Engine Bearing Set

    From $110.99

    16
     Crown Automotive Crankshaft Main Bearing Set

    Crown Automotive Crankshaft Main Bearing Set

    Crown Automotive Crankshaft Main Bearing Set

    From $52.19

    On Sale
    17
     Crown Automotive Crankshaft Bearing

    Crown Automotive Crankshaft Bearing

    Crown Automotive Crankshaft Bearing

    From $8.99

    On Sale
    17
     Crown Automotive Crankshaft Thrust Bearing

    Crown Automotive Crankshaft Thrust Bearing

    Crown Automotive Crankshaft Thrust Bearing

    From $10.79

    On Sale
    18
     Crown Automotive Connecting Rod Bearing Set

    Crown Automotive Connecting Rod Bearing Set

    Crown Automotive Connecting Rod Bearing Set

    From $24.29

    On Sale
    18
     Omix-ADA Connecting Rod Bearings

    Omix-ADA Connecting Rod Bearings

    Omix-Ada Connecting Rod Bearing

    From $10.99

    18
     Crown Automotive Connecting Rod Bearing

    Crown Automotive Connecting Rod Bearing

    Crown Automotive Connecting Rod Bearing

    From $13.49

    On Sale
    19
     Crown Automotive Camshaft Expansion Plug

    Crown Automotive Camshaft Expansion Plug

    Crown Automotive Camshaft Expansion Plug

    From $1.79

    On Sale
    20
     Crown Automotive Oil Hole Plug

    Crown Automotive Oil Hole Plug

    Crown Automotive Oil Hole Plug

    From $1.79

    On Sale
    21
     Omix-ADA Crankshaft Gear/Sprockets

    Omix-ADA Crankshaft Gear/Sprockets

    Omix-Ada Crankshaft Gear/Sprocket

    From $12.99

    21
     Crown Automotive Crankshaft Sprocket

    Crown Automotive Crankshaft Sprocket

    Crown Automotive Crankshaft Sprocket

    From $16.19

    On Sale
    22
     Crown Automotive Clutch Pilot Bearings

    Crown Automotive Clutch Pilot Bearings

    Crown Automotive Pilot Bearing

    From $15.29

    On Sale
    22
     Omix-ADA Pilot Bushings

    Omix-ADA Pilot Bushings

    Omix-Ada Pilot Bushing

    From $10.99

    23
     Crown Automotive Flywheel Ring Gear

    Crown Automotive Flywheel Ring Gear

    Crown Automotive Flywheel Ring Gear

    From $21.59

    On Sale
    23
     Omix-ADA Flywheel Ring Gears

    Omix-ADA Flywheel Ring Gears

    Omix-Ada Flywheel Ring Gear

    From $24.99

    24
     Omix-ADA Flywheels

    Omix-ADA Flywheels

    Omix-Ada Flywheel Manual Transmission

    From $126.99

    24
     Omix-ADA Flex Plates

    Omix-ADA Flex Plates

    Omix-Ada Automatic Flywheels

    From $112.99

    24
     Crown Automotive Auto Trans Flexplate

    Crown Automotive Auto Trans Flexplate

    Crown Automotive Auto Trans Flexplate

    From $101.69

    On Sale
    24
     Crown Automotive Flywheel Assembly

    Crown Automotive Flywheel Assembly

    Crown Automotive Flywheel Assembly

    From $101.69

    On Sale
    26
     Omix-ADA Camshafts

    Omix-ADA Camshafts

    Omix-Ada Camshaft

    From $136.99

    26
     Crown Automotive Camshafts

    Crown Automotive Camshafts

    Crown Automotive Camshaft

    From $102.59

    On Sale
    26
     Omix-ADA Camshaft Kits

    Omix-ADA Camshaft Kits

    Omix-Ada Camshaft Kit

    From $213.99

    27
     Omix-ADA Camshaft Bearings

    Omix-ADA Camshaft Bearings

    Omix-Ada Camshaft Bearing

    From $13.99

    27
     Crown Automotive Camshaft Bearing Set

    Crown Automotive Camshaft Bearing Set

    Crown Automotive Camshaft Bearing Set

    From $15.29

    On Sale
    28
     Omix-ADA Intake Valves

    Omix-ADA Intake Valves

    Omix-Ada Intake Valve

    From $10.99

    28
     Crown Automotive Intake Valve

    Crown Automotive Intake Valve

    Crown Automotive Intake Valve

    From $10.79

    On Sale
    29
     Omix-ADA Exhaust Valves

    Omix-ADA Exhaust Valves

    Omix-Ada Exhaust Valve

    From $10.99

    29
     Crown Automotive Exhaust Valve

    Crown Automotive Exhaust Valve

    Crown Automotive Exhaust Valve

    From $10.79

    On Sale
    30
     Crown Automotive Valve Stem Seal

    Crown Automotive Valve Stem Seal

    Crown Automotive Valve Stem Seal

    From $0.89

    On Sale
    30
     Omix-ADA Exhaust/Intake Valve Stem Seals

    Omix-ADA Exhaust/Intake Valve Stem Seals

    Omix-Ada Exhaust/Intake Valve Stem Seal

    From $1.99

    30
     Omix-ADA Intake Valve Stem Seals

    Omix-ADA Intake Valve Stem Seals

    Omix-Ada Intake Valve Stem Seal

    From $5.99

    31
     Crown Automotive Valve Spring Retainer Keeper

    Crown Automotive Valve Spring Retainer Keeper

    Crown Automotive Valve Spring Retainer Keeper

    From $0.89

    On Sale
    32
     Crown Automotive Valve Springs

    Crown Automotive Valve Springs

    Crown Automotive Valve Spring

    From $0.89

    On Sale
    33
     Omix-ADA Rocker Arms

    Omix-ADA Rocker Arms

    Omix-Ada Rocker Arm

    From $12.99

    33
     Crown Automotive Rocker Arms

    Crown Automotive Rocker Arms

    Crown Automotive Rocker Arms

    From $14.39

    On Sale
    33
     Omix-ADA Rocker Arm Kits

    Omix-ADA Rocker Arm Kits

    Omix-Ada Rocker Arm Kit

    From $29.99

    33
     Crown Automotive Rocker Arm Kit

    Crown Automotive Rocker Arm Kit

    Crown Automotive Rocker Arm Kit

    From $54.99

    34
     Omix-ADA Rocker Arm Pivots

    Omix-ADA Rocker Arm Pivots

    Omix-Ada Rocker Arm Pivot

    From $2.99

    34
     Crown Automotive Rocker Arm Pivots

    Crown Automotive Rocker Arm Pivots

    Crown Automotive Rocker Arm Pivots

    From $1.79

    On Sale
    35
     Omix-ADA Rocker Arm Bridges

    Omix-ADA Rocker Arm Bridges

    Omix-Ada Rocker Arm Bridge

    From $3.99

    35
     Crown Automotive Rocker Arm Bridges

    Crown Automotive Rocker Arm Bridges

    Crown Automotive Rocker Arm Bridges

    From $3.59

    On Sale
    36
     Crown Automotive Rocker Arm Pivot Bridge

    Crown Automotive Rocker Arm Pivot Bridge

    Crown Automotive Rocker Arm Pivot Bridge

    From $1.79

    On Sale
    37
     Crown Automotive Rocker Arm Pivot Bolt

    Crown Automotive Rocker Arm Pivot Bolt

    Crown Automotive Rocker Arm Pivot Bolt

    From $0.89

    On Sale
    38
     Omix-ADA Valve Lifters

    Omix-ADA Valve Lifters

    Omix-Ada Valve Lifter

    From $10.99

    38
     Crown Automotive Valve Lifter

    Crown Automotive Valve Lifter

    Crown Automotive Valve Lifter

    From $17.99

    On Sale
    39
     Crown Automotive Push Rod

    Crown Automotive Push Rod

    Crown Automotive Push Rod

    From $1.79

    On Sale
    39
     Omix-ADA Push Rods

    Omix-ADA Push Rods

    Omix-Ada Push Rod

    From $1.99

    40
     Crown Automotive Timing Covers

    Crown Automotive Timing Covers

    Crown Automotive Timing Cover

    From $245.69

    On Sale
    40
     Omix-ADA Timing Chain Covers

    Omix-ADA Timing Chain Covers

    Omix-Ada Timing Chain Cover

    From $111.99

    40
     Crown Automotive Timing Cover Kit

    Crown Automotive Timing Cover Kit

    Crown Automotive Timing Cover Kit

    From $70.19

    On Sale
    41
     Omix-ADA Timing Cover Gasket Sets

    Omix-ADA Timing Cover Gasket Sets

    Omix-Ada Timing Cover Gasket Set

    From $16.99

    41
     Crown Automotive Timing Gasket And Seal Kit

    Crown Automotive Timing Gasket And Seal Kit

    Crown Automotive Timing Gasket And Seal Kit

    From $6.29

    On Sale
    42
     Crown Automotive Crankshaft Seal

    Crown Automotive Crankshaft Seal

    Crown Automotive Crankshaft Seal

    From $1.79

    On Sale
    42
     Omix-ADA Crankshaft Oil Seals

    Omix-ADA Crankshaft Oil Seals

    Omix-Ada Crankshaft Oil Seal

    From $0.99

    42
     Omix-ADA Timing Cover Oil Seals

    Omix-ADA Timing Cover Oil Seals

    Omix-Ada Timing Cover Oil Seal

    From $15.99

    42
     Omix-ADA Timing Cover Seals

    Omix-ADA Timing Cover Seals

    Omix-Ada Timing Cover Seal

    From $14.99

    43
     Crown Automotive Timing Cover Gasket

    Crown Automotive Timing Cover Gasket

    Crown Automotive Timing Cover Gasket

    From $11.69

    On Sale
    44
     Crown Automotive Engine Timing Chain

    Crown Automotive Engine Timing Chain

    Crown Automotive Engine Timing Chain

    From $107.09

    On Sale
    44
     Omix-ADA Timing Chains

    Omix-ADA Timing Chains

    Omix-Ada Timing Chain

    From $103.99

    45
     Omix-ADA Camshaft Gear/Sprockets

    Omix-ADA Camshaft Gear/Sprockets

    Omix-Ada Camshaft Gear/Sprocket

    From $126.99

    45
     Crown Automotive Camshaft Sprocket

    Crown Automotive Camshaft Sprocket

    Crown Automotive Camshaft Sprocket

    From $21.59

    On Sale
    46
     Crown Automotive Timing Kit

    Crown Automotive Timing Kit

    Crown Automotive Timing Kit

    From $104.39

    On Sale
    46
     Omix-ADA Timing Chain Kits

    Omix-ADA Timing Chain Kits

    Omix-Ada Timing Kit

    From $100.99

    47
     Crown Automotive Harmonic Balancers

    Crown Automotive Harmonic Balancers

    Crown Automotive Harmonic Balancer

    From $0.89

    On Sale
    47
     Omix-ADA Crankshaft Pulley And Dampers

    Omix-ADA Crankshaft Pulley And Dampers

    Omix-Ada Crankshaft Pulley And Damper

    From $114.99

    48
     Crown Automotive Oil Slingers

    Crown Automotive Oil Slingers

    Crown Automotive Oil Slinger

    From $1.79

    On Sale
    49
     Crown Automotive Exhaust Manifolds

    Crown Automotive Exhaust Manifolds

    Crown Automotive Exhaust Manifolds

    From $102.59

    On Sale
    49
     Omix-ADA Exhaust Manifolds

    Omix-ADA Exhaust Manifolds

    Omix-Ada Exhaust Manifold

    From $100.99

    49
     Omix-ADA Exhaust Manifold Kits

    Omix-ADA Exhaust Manifold Kits

    Omix-Ada Exhaust Manifold Kit

    From $111.99

    49
     RT Off-Road Exhaust Manifolds

    RT Off-Road Exhaust Manifolds

    RT Off-Road Exhaust Manifold

    From $197.99

    On Sale
    51
     Crown Automotive Exhaust Manifold Gaskets

    Crown Automotive Exhaust Manifold Gaskets

    Crown Automotive Exhaust Manifold Gasket

    From $11.69

    On Sale