Best Bestu in 2026

Last Updated: Sep 27, 2023

At a Glance: Our Top Picks

Bestu Crankshaft Rear Main Seal Wear Sleeve Installer for John Deere 4000, 4010, 4020, 4040, 4230, 6404, 6466, 6076 7.6L
#TOP1
Bestu Crankshaft Rear Main Seal Wear Sleeve Installer
5.1
PM SCORE
GM Genuine Parts 12608750 Front Crankshaft Engine Oil Seal
#TOP2
Gm Genuine Parts 12608750 Front Crankshaft Engine Oil
9.8
PM SCORE
FEL-PRO BS 40710 Rear Main Seal Set
#TOP3
Fel-Pro Bs 40710 Rear Main Seal Set
9.7
PM SCORE

* PickSmartly editors independently research, review, and endorse the top products through comprehensive data analysis. We may earn a commission for qualifying purchases made through our product links.

Summary of the best Bestu of 2026

Bestu Crankshaft Rear Main Seal Wear Sleeve Installer For John Deere 4000, 4010, 4020, 4040, 4230, 6404, 6466, 6076 7.6L

BESTU
YZCP-JUL-266
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
royalo 5.20

Features

Servicegard rear main seal installation tool for JD models engines. Replace JDG476 JDG477 JDG478

Use to simultaneously install the Teflon unitized seal and wear sleeve on the engine rear crankshaft flange

Fit for JD models 3010 3020 4000 4010 4020 4320 4520 4620 4230 4430 4630 8430 4040 4240 4440 4640 4840 8440 (4050 W/466 ONLY) 4250 4450 4650 4850 8450 4055 4255 4455 4555 4755 4955 4560 4760 4960 and many more AG & Industrial equipment using the 270 404 466 6076 7.6L 8.1L engines

Works with Seal OEM number: RE520036, DZ111672, RE530121, RE504363, RE524227, RE22764, AR34682, and AR30382

The driver acts as a pilot to install rear oil seal in the housing eliminating the need for a dial indicator to measure

Gm Genuine Parts 12608750 Front Crankshaft Engine Oil Seal

GM
12608750
4.00 X 4.00 X 1.00 Inches
0.02 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Seals the openings on either end of the crankshaft for a tight seal

GM-recommended replacement part for your GM vehicle’s original factory component

Offering the quality, reliability, and durability of GM OE

Manufactured to GM OE specification for fit, form, and function

Fel-Pro Bs 40710 Rear Main Seal Set

FEL-PRO
BS40710
17.50 X 8.38 X 0.75 Inches
0.05 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Rear main bearing oil seal installation set

Application specific design to ensure a perfect fit

Meets or exceeds all original equipment specifications

Engineered and manufactured specifically for repair applications

Unsurpassed quality you can trust

Fel-Pro Tcs 46127 Crankshaft Front Seal Set

FEL-PRO
TCS46127
8.00 X 3.50 X 0.44 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Meets or exceeds all original equipment specifications

Application specific, providing unsurpassed quality for a seal you can trust

Validated for fit, form, and function

Engineered for the sealing repair environment

Each Fel-Pro gasket, no matter how small, is engineered to exacting standards with proprietary design, engineering and manufacturing processes

Fel-Pro Tcs 46051 Crankshaft Front Seal Set

FEL-PRO
TCS46051
3.40 X 1.20 X 3.40 Inches
0.06 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Meets or exceeds all original equipment specifications

Application specific design to ensure a perfect fit

Engineered for the sealing repair environment

Validated for fit, form and function

Unsurpassed quality you can trust

#TOP6

Front Cover Crankshaft Seal Installer Installation Tools Campatible With 1989-Current Cummins 3.9L 5.9L 6.7L Replaces 3824498 1338

MEKAR
MEKAR082701
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Mekar 9.91

Features

Wide Application – Compatible with 1989-2020 Cummins 3.9L 5.9L 6.7L, especially suitable for 1989-2016 Cummins 4BT 3.9L, B Series 5.9L, ISB 5.9L 6.7L and QSB 5.9L 6.7L.

Replacement – Suitable for OE# 3824498 1338, with seal numbers 3937111 and 3904353 or the seals in kit 3802820 installed.

High-Quality Materials – Made of top-quality wear-resistance steel, durable and anti-corrosion, repeatedly tested and optimized to ensure its excellent performance and a long service life.

Function - This kit is specially used to correctly place the crankshaft sealing ring during the installation process, avoid any leakage due to uneven placement and make the work proceed in a correct and orderly manner.

Package Include - 1*Front Cover Crankshaft Seal Installation Tool. -----Any other problem about the product, please feel free to contact us. If you are not satisified with the item, please feel free to return it back and we will refund full back to you. If the item has defect, please contact us, we take all the responsibility and reissue it for free without hesitation.

Fel-Pro Bs 40013 Rear Main Seal Set

FEL-PRO
BS40013
8.00 X 3.50 X 0.90 Inches
0.05 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Rear main bearing oil seal installation set

Application specific design to ensure a perfect fit

Meets or exceeds all original equipment specifications

Engineered and manufactured specifically for repair applications

Unsurpassed quality you can trust

Fel-Pro Bs 40650 Rear Main Seal Set

FEL-PRO
BS40650
12.00 X 11.00 X 1.00 Inches
0.75 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Rear main bearing oil seal installation set

Application specific design to ensure a perfect fit

Meets or exceeds all original equipment specifications

Engineered and manufactured specifically for repair applications

Unsurpassed quality you can trust

Fel-Pro Bs 40666 Rear Main Seal Set

FEL-PRO
BS40666
5.00 X 5.00 X 1.00 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Rear main bearing oil seal installation set

Application specific design to ensure a perfect fit

Meets or exceeds all original equipment specifications

Engineered and manufactured specifically for repair applications

Unsurpassed quality you can trust

Acdelco Gold 9845 Crankshaft Front Oil Seal

ACDELCO
9845
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Designed, Engineered, Tested For GM Vehicles.

Package Weight : 0.06 Pounds

Country Of Origin : Taiwan, Province Of China

Fit Type: Vehicle Specific

Fel-Pro Tcs 46026 Crankshaft Front Seal Set

FEL-PRO
TCS46026
3.40 X 3.40 X 1.30 Inches
0.06 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Meets or exceeds all original equipment specifications

Application specific, providing unsurpassed quality for a seal you can trust

Validated for fit, form, and function

Engineered for the sealing repair environment

Each Fel-Pro gasket, no matter how small, is engineered to exacting standards with proprietary design, engineering and manufacturing processes

Fel-Pro Bs 40631 Rear Main Seal Set

FEL-PRO
BS40631
12.00 X 6.00 X 0.80 Inches
0.55 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Rear main bearing oil seal installation set

Application specific design to ensure a perfect fit

Meets or exceeds all original equipment specifications

Engineered and manufactured specifically for repair applications

Unsurpassed quality you can trust

Fel-Pro Bs 40689 Rear Main Seal Set

FEL-PRO
BS40689
11.00 X 8.00 X 0.70 Inches
0.71 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Rear main bearing oil seal installation set

Application specific design to ensure a perfect fit

Meets or exceeds all original equipment specifications

Engineered and manufactured specifically for repair applications

Unsurpassed quality you can trust

#TOP14
Best For Ford

Crankshaft Front Seal Installer 303-1259 And Rear Main Seal Installer Tool 303-770 Fit For Ford 4.5L, 6.0L & 6.4L Powerstroke F-250/350/450/550

E-COWLBOY
YM-303
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Bird's wings 9.88

Features

303-770 Rear Main Seal Installer – Use for installation & removal of crankshaft rear seal wear ring fit for Ford 4.5L, 6.0L & 6.4L Powerstroke Diesel Engine, Low Cab Forward, F-Super Duty 250-550, E-Series.

303-1259 Front Seal Installer – Use to install crankshaft front seal/ wear sleeve fit for Ford 6.4L Powerstroke Engines, include F-250/350/450/550;Super Duty 2008, 2009, 2010; 365-MaxxForce7. This tool is needed to prevent your seal from leaking.

Superior Quality – Constructed from high standard forged steel for strength, durability, and longevity; coated with black oxide finish for resistance to rust and corrosion. Never worry wear or damage to the tool!

Direct Replacement – Replace ZTSE4515C ZTSE4515 303-770 and 303-1259 ZTSE4691. Meet the OE quality and performance, makes your work easier while saving money.

100% Satisfaction Guarantee – If you're not 100% satisfied with your tools, simply return it for a full refund in 30 days, guarantee with 12 months’ warranty.

#TOP15
Best For Ford

303-770 Crankshaft Rear Main Seal Installer Tool For Ford 4.5L, 6.0L & 6.4L Powerstroke, Rear Seal & Wear Ring Installer

E-COWLBOY
303-770
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Bird's wings 9.88

Features

APPLICATION – Fit for Ford 4.5L, 6.0L & 6.4L Powerstroke Diesel Engine, Low Cab Forward, F-Super Duty 250-550, E-Series.(Specific application reference as following).

FUNCTION -- Use for installation & removal of crankshaft rear seal wear ring for your Ford. Preventing your seal from leaking.

SUPERIOR MATERIAL -- Constructed from high standard forged steel for strength, durability, and longevity; coated with black oxide finish for resistance to rust and corrosion. Never worry wear or damage to the tool!

DIRECT REPLACEMENT-- Replace ZTSE4515C ZTSE4515 303-770. This rear main seal installer tool makes this job easier!

100 SATISFACTION GUARANTEE -- We are responsible for our products and service. If you're not 100% satisfied with this Tool, simply return it for a full refund in 30 days, guarantee with 1-year warranty.

Acdelco Gold 3604 Crankshaft Front Oil Seal

ACDELCO
3604
0.08 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Dependable replacement

Economically priced

Provides the performance you expect from acdelco

Gm Genuine Parts 89060436 Crankshaft Rear Main Seal

GENERAL MOTORS
89060436
5.10 X 5.10 X 0.80 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Seals the openings on either end of the crankshaft for a tight seal

Withstands heat and pressure to help prevent the engine from leaking oil

GM-recommended replacement part for your GM vehicle’s original factory component

Offering the quality, reliability, and durability of GM OE

Manufactured to GM OE specification for fit, form, and function

Fel-Pro Tcs 46113 Crankshaft Front Seal Set

FEL-PRO
TCS46113
8.00 X 3.50 X 0.50 Inches
0.05 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Meets or exceeds all original equipment specifications

Application specific, providing unsurpassed quality for a seal you can trust

Validated for fit, form, and function

Engineered for the sealing repair environment

Each Fel-Pro gasket, no matter how small, is engineered to exacting standards with proprietary design, engineering and manufacturing processes

Fel-Pro Tcs 46194 Crankshaft Front Seal Set

FEL-PRO
TCS46194
8.00 X 4.00 X 0.50 Inches
0.05 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Meets or exceeds all original equipment specifications

Application specific design to ensure a perfect fit

Engineered for the sealing repair environment

Validated for fit, form and function

Unsurpassed quality you can trust

National 9845 Crankshaft Seal

NATIONAL
9845
2.80 X 0.70 X 2.80 Inches
0.02 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Leon Auto Broker 9.68

Features

Design type: spring loaded; multi-lip

Temperature range: -40°F to 400°F / -40°C to 204°C

Excellent high temperature capabilities

Compatible with wide range of fluids

Delivers quality and reliable performance for every type of repair

#TOP21
Best For Seal

Otc 7196 Crank And Cam Seal Service Kit

OTC
7196
17.50 X 8.00 X 2.00 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

OTC's Crank & Cam Seal Service Set removes and installs camshaft and crankshaft seals on cars, trucks, vans, and SUV's without damage

Includes a puller coupled with specialized puller legs that hook the seal for quick and easy removal

The interchangeable seal install adapters are designed for use with the cam or crank bolt

Kit services seal sizes of 21.5mm to 64mm

Rugged blow molded plastic storage case keeps tools contained and organized so they are ready when you need them

Acdelco Gold 223830 Crankshaft Front Oil Seal

ACDELCO
223830
3.00 X 3.00 X 1.00 Inches
0.04 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Some ACDelco Gold parts may have formerly appeared as ACDelco Professional

Premium aftermarket replacement part

Manufactured to meet specifications for fit, form, and function for General Motors vehicles as well as most makes and models

Flange Material: Steel, Sealing Surface Material: Rubber

National 223801 Oil Seal

NATIONAL
223801
2.75 X 0.69 X 2.75 Inches
0.03 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Design type: spring loaded; multi-lip

Temperature range: -40°F to 225°F / -40°C to 107°C

Good low temperature capability

Low swell in hydrocarbon fluids

Delivers quality and reliable performance for every type of repair

National 714675 Differential Pinion Seal

NATIONAL
714675
3.25 X 0.88 X 3.25 Inches
0.08 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Design type: spring loaded; multi-lip

Temperature range: -40°F to 400°F / -40°C to 204°C

Excellent high temperature capabilities

Compatible with wide range of fluids

Delivers quality and reliable performance for every type of repair

Acdelco Gold 8792S Crankshaft Front Oil Seal

ACDELCO
8792S
3.10 X 3.10 X 1.30 Inches
0.03 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Dependable replacement

Economically priced

Provides the performance you expect. Shaft Diameter: 0.500 in

Country of Origin : Taiwan

Fel-Pro Tcs 46195 Crankshaft Front Seal Set

FEL-PRO
TCS46195
7.00 X 4.00 X 1.00 Inches
0.07 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Meets or exceeds all original equipment specifications

Application specific design to ensure a perfect fit

Engineered for the sealing repair environment

Validated for fit, form and function

Unsurpassed quality you can trust

Fel-Pro Bs 40685 Rear Main Seal Set

FEL-PRO
BS40685
5.00 X 5.00 X 1.00 Inches
0.10 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Rear main bearing oil seal installation set

Application specific design to ensure a perfect fit

Meets or exceeds all original equipment specifications

Engineered and manufactured specifically for repair applications

Unsurpassed quality you can trust

National 9613S Oil Seal

NATIONAL
9613S
2.75 X 0.69 X 2.75 Inches
0.02 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Design type: spring loaded; multi-lip

Temperature range: -40°F to 225°F / -40°C to 107°C

Good low temperature capability

Low swell in hydrocarbon fluids

Delivers quality and reliable performance for every type of repair

Acdelco Gold 4762N Crankshaft Front Oil Seal

ACDELCO
4762N
0.15 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Dependable replacement

Made in Taiwan

Provides the performance you expect from ACDelco

Package Weight : 0.15 Pounds

#TOP30

3164780 Crankshaft Rear Main Seal & Wear Sleeve Installer & Seal Remover Tool For Cummins Isx Qsx Isx15 Isx12

E-COWLBOY
4918991
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Bird's wings 9.87

Features

FITMENT – Work on Cummins Signature, ISX & QSX,ISX12 and ISX15 engine. It will fit the newest Cummins seal perfectly.

BENEFITS -- Specifically design to install and remove the crankshaft rear seal & wear sleeve, saving time and reducing risk of crankshaft seal surface damage during removal.

DIRECT REPLACEMENT -- This is a high-quality aftermarket alternative to OEM #3164780 (seal/sleeve kit PN 4965569).

SUPERIOR MATERIAL -- Made from high standard carbon steel which can withstand corrosion, rust and impact, its heavy duty construction ensures an unparalleled long lifespan.

100% SATISFACTION GUARANTEE -- If you're not 100% satisfied with your tool, simply return it for a full refund in 30 days, guarantee with 12 months’ warranty.

Bestu on Amazon: A Comprehensive Review

As an online shopper, it's crucial to make informed decisions. This review will focus on Bestu, a brand that has made its presence felt on Amazon. With its wide range of products in Automotive Replacement Crankshaft Seals, Bestu has become a go-to for many shoppers.

Product Range

Bestu offers a vast product count of 198 items. This diverse selection caters to a wide array of needs and preferences, making it a versatile brand for consumers.

Quality and Pricing

Quality is a defining factor for any brand. Based on customer feedback and ratings, Bestu's products have an average rating of 4.4 out of 10, indicating a high level of customer satisfaction.

When it comes to pricing, Bestu has products ranging from a minimum price of $3.89 to a maximum of $898.99, with an average price of $88.83. This pricing structure caters to a wide range of budgets, making Bestu an accessible choice for many shoppers.

Customer Service

Customer service is the backbone of any successful online brand. Bestu is sold by royalo, who are known for their commitment to customer satisfaction. They have been responsive and helpful, according to customer reviews and feedback.

Shopping Experience

The shopping experience on Amazon with Bestu has been largely positive. The brand's wide range of products, combined with the ease of navigation on Amazon, has made shopping a breeze for many customers.

Delivery and Packaging

Delivery and packaging are yet another aspect where Bestu shines. Items are delivered in a timely manner and the packaging ensures the products reach the customers in pristine condition.

Conclusion

In conclusion, Bestu offers a wide range of quality products at varying price points, making it a brand worth considering for your next Amazon purchase. Their commitment to customer service, combined with a seamless shopping experience, makes Bestu stand out in the crowded Amazon marketplace.

Overall Rating

Based on the analysis of product range, quality, pricing, customer service, shopping experience, and delivery, we rate Bestu [4.4 out of 10 stars].