What are the differences in the V6 engine mounts and their replacement procedures on Lexus ES300?

The V6 engine mounts are slightly different but don't significantly alter the check and replacement procedures. The engine movement control rod assembly has two stays, removed by taking out two through-bolts and the control rod. V6 models have a shock absorbing mount, removed by taking out the through-bolt, nut and bushing. The rear mount differs as the bracket cradles the insulator, removed by taking out the through-bolt, raising the engine, and removing the nuts and insulator.

How to check and replace engine mounts on V6 engine on Lexus ES350?

To inspect the engine mounts, lift the vehicle onto jack stands and place a jack under the engine oil pan. Also, raise the engine slightly to check the mounts for cracked or hardened rubber, or movement between the mount plates and engine. For replacement, remove the mount-to-engine bracket nut from the other mount. Install the new mount with a non-hardening thread locking compound on the bolts and nuts.

How should engine mounts be checked and replaced in 3.5L V6 engine on Lexus RX350?

Engine mounts are usually very reliable and usually do not need intervention; however, if they are broken or worn, they should be replaced to avoid straining or damaging driveline elements. During the check the engine should be lifted slightly off the mounts to take the weight off them. First, lift the vehicle and firmly set it on jackstands; place a jack beneath the engine oil pan and insert a large wood block between the jack top and the oil pan; then lift the engine sufficiently off its mounts to shift the load off the mounts but remain far off the drain plug area. This is more important when only supporting a particular part of the body with a jack while the rest of it is under the engine. Test for deterioration at or around the mount area by examining the mounts for crack, hard rubber and if the mounts have totally come off from the metal plates; test the relative movement between the mount plates and the engine or frame with a large screw driver or a pry bar. If any movement is observed, drop the engine and compact the mount fasteners. For replacement, the vehicle should be on jackstands and the engine should also be supported. To deinstall, uninstall the bolts, lift the engine sideways, and disconnect the mount though an engine lift or floor jack and a wooden block placed under the oil pan can be used. If only a single mount is being replaced, the other mount's nut for the mount to engine bracket should be loosened to permit enough elevation of the engine for mount removal. It is done in the reverse method as the removal, applying non-hardening thread locking compound on the mount bolts and nuts while tightening it.

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Lexus Front Engine Mounting Insulator
Part Number: 12361-50170
$192.50 MSRP: $262.46
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Product Specifications
- Other Name: Insulator, Engine Mounting, Front; Front Mount
- Position: Front
Fits the following Lexus Models:
- LS430 | 2001-2006 | 8 Cyl 4.3L
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Lexus Insulator, Engine Mounting, RH(For Transverse Engine)
Part Number: 12362-31040
$221.66 MSRP: $302.22
You Save: $80.56 (27%)
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Product Specifications
- Other Name: Front Insulator, Side Mount
- Position: Passenger Side
Fits the following Lexus Models:
- ES350 | 2007-2012 | 6 Cyl 3.5L
- RX350 | 2010-2014 | STD | 6 Cyl 3.5L
- RX450h | 2010-2014 | STD | 6 Cyl 3.5L
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Lexus Insulator, Engine Mounting, Front(For Transverse Engine)
Part Number: 12361-31171
$217.39 MSRP: $296.39
You Save: $79.00 (27%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Front Mount, Insulator
- Position: Front
- Replaces: 12361-31170
Fits the following Lexus Models:
- ES350 | 2007-2012 | 6 Cyl 3.5L
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Lexus Insulator, Engine Mounting, Rear NO.1
Part Number: 12371-50170
$129.43 MSRP: $176.47
You Save: $47.04 (27%)
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Product Specifications
- Other Name: Rear Mount
- Position: Rear
Fits the following Lexus Models:
- LS430 | 2003-2006 | 8 Cyl 4.3L
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Lexus Engine Mounting Insulator
Part Number: 12361-38221
$167.37 MSRP: $228.19
You Save: $60.82 (27%)
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Product Specifications
- Other Name: Insulator, Engine Mounting, Front; Front Mount
- Position: Front
- Replaces: 12361-38220
Fits the following Lexus Models:
- LS460 | 2008-2017 | 8 Cyl 4.6L
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Lexus Front Engine Mounting Insulator
Part Number: 12361-46190
$166.52 MSRP: $227.03
You Save: $60.51 (27%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Insulator, Engine Mounting, Front; Front Insulator, Mounting Insulator
- Position: Front
Fits the following Lexus Models:
- GS300 | 1998-2005 | 6 Cyl 3.0L
- GS400 | 1998-2000 | 6 Cyl 3.0L
- GS430 | 2001-2005 | 6 Cyl 3.0L
- IS300 | 2001-2005 | 6 Cyl 3.0L
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Lexus Insulator, Engine Mounting, LH(For Transverse Engine)
Part Number: 12372-0P010
$174.69 MSRP: $238.18
You Save: $63.49 (27%)
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Product Specifications
- Other Name: Insulator, Side Mount
- Position: Driver Side
- Replaces: 12372-31010
Fits the following Lexus Models:
- ES300h | 2013-2018 | 6 Cyl 3.5L
- ES350 | 2007-2018 | 6 Cyl 3.5L
- RX350 | 2010-2015 | STD | 6 Cyl 3.5L
- RX450h | 2010-2015 | STD | 6 Cyl 3.5L
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Lexus Insulator, Engine Mounting, Rear NO.1
Part Number: 12371-31070
$53.49 MSRP: $71.18
You Save: $17.69 (25%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Rear Mount, Transmission Mount
- Position: Rear
Fits the following Lexus Models:
- GS300 | 2006 | 6 Cyl 3.0L, 6 Cyl 3.5L, 8 Cyl 4.3L
- GS350 | 2007-2011 | 6 Cyl 3.0L, 6 Cyl 3.5L, 8 Cyl 4.3L
- GS430 | 2006-2007 | 6 Cyl 3.0L, 6 Cyl 3.5L, 8 Cyl 4.3L
- GS460 | 2008-2011 | 6 Cyl 3.5L, 8 Cyl 4.3L
- IS250 | 2006-2015 | 250C, 350C | 6 Cyl 2.5L, 6 Cyl 3.5L
- IS350 | 2006-2015 | 250C, 350C | 6 Cyl 2.5L, 6 Cyl 3.5L
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Lexus Engine Mounting Insulator
Part Number: 12371-20050
$74.89 MSRP: $101.28
You Save: $26.39 (27%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Insulator, Engine Mounting, Rear; Rear Insulator, Rear Mount
- Position: Rear
Fits the following Lexus Models:
- RX300 | 1999-2003 | 6 Cyl 3.0L
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Lexus Front Engine Mounting Insulator
Part Number: 12361-20060
$210.07 MSRP: $286.41
You Save: $76.34 (27%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Insulator, Engine Mounting, Front; Front Mount
- Position: Front
Fits the following Lexus Models:
- RX300 | 1999-2003 | 6 Cyl 3.0L
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Lexus Front Engine Mounting Insulator
Part Number: 12361-50190
$115.12 MSRP: $155.67
You Save: $40.55 (27%)
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Product Specifications
- Other Name: Insulator, Engine Mounting, Front; Front Mount
- Position: Front
Fits the following Lexus Models:
- GX470 | 2003-2009 | 8 Cyl 4.7L
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Lexus Insulator, Engine Mounting, Rear NO.1
Part Number: 12371-50060
$57.61 MSRP: $76.66
You Save: $19.05 (25%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Rear Mount
- Position: Rear
Fits the following Lexus Models:
- LS400 | 1995-2000 | 8 Cyl 4.0L
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Lexus Insulator, Engine Mounting, Rear NO.1
Part Number: 12371-50150
$146.75 MSRP: $200.09
You Save: $53.34 (27%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Rear Mount
- Position: Rear
Fits the following Lexus Models:
- GX470 | 2003-2009 | 8 Cyl 4.7L
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Lexus Insulator, Engine Mounting, LH(For Transverse Engine)
Part Number: 12372-20030
$97.53 MSRP: $131.89
You Save: $34.36 (27%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Insulator, Transmission Mount
- Position: Driver Side
Fits the following Lexus Models:
- RX300 | 1999-2003 | 6 Cyl 3.0L
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Lexus Insulator, Engine Mounting, Rear NO.1
Part Number: 12371-38050
$169.81 MSRP: $231.52
You Save: $61.71 (27%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Rear Mount, Transmission Mount
- Position: Rear
Fits the following Lexus Models:
- LS460 | 2007-2012 | 8 Cyl 4.6L
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Lexus Insulator Sub-Assembly
Part Number: 12305-0P010
$209.34 MSRP: $285.41
You Save: $76.07 (27%)
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Product Specifications
- Other Name: Insulator Sub-Assy, Engine Mounting, RH; Side Mount
- Position: Passenger Side
- Replaces: 12305-31070
Fits the following Lexus Models:
- RX350 | 2016-2022 | STD | 6 Cyl 3.5L
- RX350L | 2018-2022 | 6 Cyl 3.5L
- RX450h | 2016-2022 | STD | 6 Cyl 3.5L
- RX450hL | 2018-2022 | 6 Cyl 3.5L
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Lexus Engine Mounting Insulator
Part Number: 12371-37250
$94.94 MSRP: $128.39
You Save: $33.45 (27%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Insulator, Engine Mounting, Rear; Rear Mount
- Position: Rear
Fits the following Lexus Models:
- CT200h | 2011-2014 | B, E | 4 Cyl 1.8L
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Lexus Engine Mounting Insulator
Part Number: 12361-31430
$152.73 MSRP: $208.24
You Save: $55.51 (27%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Insulator, Engine Mounting, Front; Front Insulator, Side Mount
- Position: Front
Fits the following Lexus Models:
- GS Turbo | 2017 | 6 Cyl 3.5L
- GS200t | 2016 | 6 Cyl 3.5L
- GS300 | 2018-2019 | 6 Cyl 3.5L
- GS350 | 2015-2020 | 6 Cyl 3.5L
- GS450h | 2015-2018 | 6 Cyl 3.5L
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Lexus Engine Mounting Insulator
Part Number: 12372-0P060
$115.36 MSRP: $156.01
You Save: $40.65 (27%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Insulator, Engine Mounting, LH(For Transverse Engine); Side Mount
- Position: Driver Side
- Replaces: 12372-31100
Fits the following Lexus Models:
- RX350 | 2016-2022 | STD | 6 Cyl 3.5L
- RX350L | 2018-2022 | 6 Cyl 3.5L
- RX450h | 2016-2022 | STD | 6 Cyl 3.5L
- RX450hL | 2018-2022 | 6 Cyl 3.5L
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Lexus Engine Mounting Insulator
Part Number: 12362-0P051
$164.93 MSRP: $224.87
You Save: $59.94 (27%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Insulator, Engine Mounting, RH(For Transverse Engine); Side Mount
- Position: Passenger Side
- Replaces: 12362-0P050
Fits the following Lexus Models:
- RX350 | 2010-2015 | STD | 6 Cyl 3.5L
- RX450h | 2010-2015 | STD | 6 Cyl 3.5L

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Lexus Engine Mount Parts Questions & Experts Answers

Insulator, Engine Mounting, LH(For Transverse Engine)
12372-20040
Q: What are the differences in the V6 engine mounts and their replacement procedures on Lexus ES300?
A:
The V6 engine mounts are slightly different but don't significantly alter the check and replacement procedures. The engine movement control rod assembly has two stays, removed by taking out two through-bolts and the control rod. V6 models have a shock absorbing mount, removed by taking out the through-bolt, nut and bushing. The rear mount differs as the bracket cradles the insulator, removed by taking out the through-bolt, raising the engine, and removing the nuts and insulator.
Insulator, Engine Mounting, Front(For Transverse Engine)
12361-31171
Q: How to check and replace engine mounts on V6 engine on Lexus ES350?
A:
To inspect the engine mounts, lift the vehicle onto jack stands and place a jack under the engine oil pan. Also, raise the engine slightly to check the mounts for cracked or hardened rubber, or movement between the mount plates and engine. For replacement, remove the mount-to-engine bracket nut from the other mount. Install the new mount with a non-hardening thread locking compound on the bolts and nuts.
Insulator, Engine Mounting, RH(For Transverse Engine)
12362-31040
Q: How should engine mounts be checked and replaced in 3.5L V6 engine on Lexus RX350?
A:
Engine mounts are usually very reliable and usually do not need intervention; however, if they are broken or worn, they should be replaced to avoid straining or damaging driveline elements. During the check the engine should be lifted slightly off the mounts to take the weight off them. First, lift the vehicle and firmly set it on jackstands; place a jack beneath the engine oil pan and insert a large wood block between the jack top and the oil pan; then lift the engine sufficiently off its mounts to shift the load off the mounts but remain far off the drain plug area. This is more important when only supporting a particular part of the body with a jack while the rest of it is under the engine. Test for deterioration at or around the mount area by examining the mounts for crack, hard rubber and if the mounts have totally come off from the metal plates; test the relative movement between the mount plates and the engine or frame with a large screw driver or a pry bar. If any movement is observed, drop the engine and compact the mount fasteners. For replacement, the vehicle should be on jackstands and the engine should also be supported. To deinstall, uninstall the bolts, lift the engine sideways, and disconnect the mount though an engine lift or floor jack and a wooden block placed under the oil pan can be used. If only a single mount is being replaced, the other mount's nut for the mount to engine bracket should be loosened to permit enough elevation of the engine for mount removal. It is done in the reverse method as the removal, applying non-hardening thread locking compound on the mount bolts and nuts while tightening it.