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The Importance and Function of Engine Bearings

Engines primarily rely on oil for lubrication, but that’s not the only way they minimize friction and heat. They also employ various engine bearings that reduce resistance while running at thousands of revolutions per minute. When these bearings age or fail, they can lead to catastrophic engine damage.

Most engines have the same types of bearings, starting with the main crankshaft bearings, which sit at the front and rear of the crankshaft inside the engine. Next are the connecting rod bearings, where the connecting rods attach to the crankshaft. The piston head bearings reduce resistance where the pistons connect to the top of the connecting rods. Finally, the camshaft bearings reduce friction from the camshaft spinning inside the engine.

If an engine bearing starts failing, you may hear a faint grinding sound from inside the engine. As the bearing gets worse, the noise will get louder. Eventually, the bearing can fail, leading to excessive friction and damaging internal engine components.

Because engine bearings play such a key role, replacing them the moment they start making noise is important.

Get Genuine Replacement Engine Bearings at AutoNation Parts

Do you have a failing engine bearing? If so, replace it with high-quality parts that will operate as expected and last many years. AutoNation Parts has a large collection of engine bearings for all makes and models.

On top of offering high-quality replacement parts, AutoNation Parts also saves you time with convenient online ordering and direct shipment to your front door.

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55497814 - : Main Bearings for GM Image

Main Bearings

Encore GX. Lower. Trailblazer. Journals 1-3. Position-1,2,3. Marked "817". 2.422-2.428. Engine Crankshaft Main Bearing.
$6.92
MSRP $9.35
Save $2.43
26% Off
JT4Z6333R - : Main Bearings for Ford Image

Main Bearings

Engine Crankshaft Main Bearing.
$15.31
MSRP $20.17
Save $4.86
24.1% Off
278033090252GZ64 - : Engine Crankshaft Main Bearing for Mercedes-Benz Image

Engine Crankshaft Main Bearing

Mercedes-Benz 278-033-09-02-52-GZ64
$28.05
MSRP $37.00
Save $8.95
24.2% Off
122071MR7A - : Engine Crankshaft Main Bearing for Nissan Image

Engine Crankshaft Main Bearing

Nissan 12207-1MR7A
370Z. Grade 7. 350Z. Engine Crankshaft Main Bearing.
$29.97
MSRP $38.67
Save $8.70
22.5% Off
55514329 - : Main Bearings for GM Image

Main Bearings

Encore GX. Upper. Journal 2. 2.422-2.428. Trailblazer. Position-2. Marked "339". 2.422-2.428. Engine Crankshaft Main Bearing.
$6.92
MSRP $9.35
Save $2.43
26% Off
12111JK20A - : Engine Connecting Rod Bearing for Nissan Image

Engine Connecting Rod Bearing

Nissan 12111-JK20A
370Z. 350Z. Grade 0. Engine Connecting Rod Bearing.
$32.35
MSRP $41.73
Save $9.38
22.5% Off
79105591AJGRN - : Engine Crankshaft Main Bearing for Audi Image

Engine Crankshaft Main Bearing

Position-3. Position-5. S5. Lower. Green. From 11/02/2009. This genuine Audi Engine Crankshaft Main Bearing, part number...
$97.39
MSRP $128.31
Save $30.92
24.1% Off
117016202201 - : Engine Crankshaft Main Bearing for Lexus Image

Engine Crankshaft Main Bearing

ES250. No. 1. Mark 1. Engine Crankshaft Main Bearing.
$27.19
MSRP $33.26
Save $6.07
18.3% Off
6M105561RGLB - : Engine Crankshaft Main Bearing for Audi Image

Engine Crankshaft Main Bearing

This genuine Audi Engine Crankshaft Main Bearing, part number 06M-105-561-R-GLB, operates inside the engine's rotating and sealing...
$33.86
MSRP $50.58
Save $16.72
33.1% Off
110727001002 - : Main Bearings for Lexus Image

Main Bearings

LS500. Mark upper 2, lower 2. No. 3.
$27.93
MSRP $34.41
Save $6.48
18.8% Off
WHT000033 - : Engine Crankshaft Thrust Washer for Volkswagen Image

Engine Crankshaft Thrust Washer

Volkswagen WHT-000-033
Passat. Jetta. Rabbit. Beetle. Thrust washers. Engine Crankshaft Thrust Washer.
$16.60
MSRP $25.38
Save $8.78
34.6% Off
11211021456 - : Engine Crankshaft Thrust Washer for Mini Image

Engine Crankshaft Thrust Washer

Bearing. Grade 2. Color-Green. Engine Crankshaft Thrust Washer.
$46.88
MSRP $57.37
Save $10.49
18.3% Off
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