Engine Balance Shafts
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- Timken®Front Crankshaft Seal (1172S)Front Crankshaft Seal (1172S) by Timken®. Get optimum vehicle performance with Timken bearings. Timken manufactures ball bearings, cylindrical roller bearings, and tapered roller bearings, and all feature premium design, enhanced...Expertly crafted from premium materialsDesigned to match rigorous quality standards$12.51
- Timken®Front Crankshaft Seal (3655S)Front Crankshaft Seal (3655S) by Timken®. Get optimum vehicle performance with Timken bearings. Timken manufactures ball bearings, cylindrical roller bearings, and tapered roller bearings, and all feature premium design, enhanced...Expertly crafted from premium materialsDesigned to match rigorous quality standards$12.19
- Timken®Front Crankshaft Seal (2955)Front Crankshaft Seal (2955) by Timken®. Get optimum vehicle performance with Timken bearings. Timken manufactures ball bearings, cylindrical roller bearings, and tapered roller bearings, and all feature premium design, enhanced surface...Expertly crafted from premium materialsDesigned to match rigorous quality standards$15.15
- Timken®Front Upper Crankshaft Seal (222820)Front Upper Crankshaft Seal (222820) by Timken®. Get optimum vehicle performance with Timken bearings. Timken manufactures ball bearings, cylindrical roller bearings, and tapered roller bearings, and all feature premium design, enhanced...Expertly crafted from premium materialsDesigned to match rigorous quality standards$6.31
- Corteco®ACM Balance Shaft Seal (19037088B)ACM Balance Shaft Seal (19037088B) by Corteco®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$8.22
- Corteco®Axle Shaft Seal (12015555B)Axle Shaft Seal (12015555B) by Corteco®. Designed with precision and functionality in mind, this accessory ensures outstanding performance and easy use which makes it the perfect deal for your ultimate satisfaction.Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$4.40
- Corteco®Axle Shaft Seal (01033865B)Axle Shaft Seal (01033865B) by Corteco®. Designed with precision and functionality in mind, this accessory ensures outstanding performance and easy use which makes it the perfect deal for your ultimate satisfaction.Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$7.21
- Corteco®Axle Shaft Seal (19037132B)Axle Shaft Seal (19037132B) by Corteco®. Designed with precision and functionality in mind, this accessory ensures outstanding performance and easy use which makes it the perfect deal for your ultimate satisfaction.Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$5.81
- Dorman®OE Solutions™ Standard Counter Balance Shaft Seal Kit (917-006)OE Solutions™ Standard Counter Balance Shaft Seal Kit (917-006) by Dorman®. This engine balance shaft seal kit is designed to match the original hardware required to repair the shaft seal during service on specified vehicles. Made of...Direct replacement - this engine balance shaft seal kit is designed to match the original hardware required to repair the shaft seal during service on specified vehiclesIdeal solution - this kit is a reliable replacement for original components required during timing belt servicing, or that have failed due to fatigue$7.54
- Genuine®Balance Shaft O-Ring (WHT 001 905)Balance Shaft O-Ring (WHT 001 905) by Genuine®. Location: behind Intermediate Shaft Sprocket. Genuine is here to give you the ultimate in quality and reliability at a cost you can afford. Designed utilizing the latest technologies and...Made with precision and quality in mindDesigned to meet your specific needs$5.18
- Mahle®Auxiliary Shaft Seal (67031)Auxiliary Shaft Seal by Mahle®. This product is made of high-quality components to meet and exceed strict quality requirements. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver...Made with precision and quality in mindDesigned to meet your specific needs$7.97
- Mahle®Rear Balance Shaft Seal Set (67971)Rear Balance Shaft Seal Set (67971) by Mahle®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$15.76
- Continental® ContiTech™Balance Shaft Seal (CS9021)Balance Shaft Seal by Continental® ContiTech™. Replace your worn out balance shaft seal with this product made of premium quality materials to ensure reliable, long-lasting performance. Manufactured in ISO/TS 16949:2002 quality...OE quality product for safe, reliable, and efficient performancePrevents oil leakage$7.06
- Apex Auto®Multi Layered Steel Auxiliary Shaft Seal Set (ATC4231)Multi Layered Steel Auxiliary Shaft Seal Set by Apex Auto®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability. Designed to...Quick accurate delivery with excellent fill-rateExcellent inventory availability$5.57
- Apex Auto®OE Auxiliary Shaft Seal Set (ATC9002)OE Auxiliary Shaft Seal Set by Apex Auto®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability. Designed to provide a...Quick accurate delivery with excellent fill-rateExcellent inventory availability$9.63
- ITM Engine®Balance Shaft Seal (15-00917)Balance Shaft Seal by ITM Engine®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading...Designed with innovative manufacturing techniquesMade with maximum safety and reliability in mind$3.72
- ITM Engine®Balance Shaft Seal (15-00804)Balance Shaft Seal by ITM Engine®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading...Designed with innovative manufacturing techniquesMade with maximum safety and reliability in mind$4.20
- Elring®Fluoride Rubber Balance Shaft Seal (135.151)Fluoride Rubber Balance Shaft Seal (135.151) by Elring®. Location: Transmission End. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of...OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price$7.57
- National®Clockwise-Spiral Lip Design Polyacrylate Auxiliary Shaft Seal (223802)Clockwise-Spiral Lip Design Polyacrylate Auxiliary Shaft Seal (223802) by National®. Designed utilizing the latest technology, this product by National features premium quality and will perform better than advertised. Perfect for your...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$5.25
- CRP®Rear Auxiliary Shaft Seal (99970161440EC)Rear Auxiliary Shaft Seal by CRP®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$1.86
- Stone®Balance Shaft Seal (JF36508)Balance Shaft Seal by Stone®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$0.89
- Timken®Manual Transmission Input Shaft Seal (223020)Manual Transmission Input Shaft Seal (223020) by Timken®. Width: 7". Outside Diameter: 1.859". Housing Bore: 1.85". Timken offers the right seal to keep your vehicle running optimally. Timken seals provide ultimate protection from...Machined rubber sealing edge provides greater accuracy and consistency and a better sealing surfaceAn extra dust lip helps keep harmful contaminants out and protects against rust and corrosion$6.92
- Timken®Manual Transmission Output Shaft Seal (710415)Manual Transmission Output Shaft Seal by Timken®. Rear. Width: 0.315". Outside Diameter: 1.978". Housing Bore: 1.969". Timken offers the right seal to keep your vehicle running optimally. Timken seals provide ultimate protection from...Machined rubber sealing edge provides greater accuracy and consistency and a better sealing surfaceAn extra dust lip helps keep harmful contaminants out and protects against rust and corrosion$7.86
- SKF®Balance Shaft Seal (10584)Balance Shaft Seal by SKF®. Do you hear chirping or squealing noise? Has the "power" disappeared from your steering? Does your engine crank slowly and are your lights dim? You may need accessory drive belt repairs, but before you waste...Made with precision and quality in mindDesigned to meet your specific needs$7.22
- AJUSA®Balance Shaft Seal (15094000)Balance Shaft Seal (15094000) by AJUSA®. Designed utilizing the latest technology, this product by AJUSA features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is manufactured to...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$9.26
- AJUSA®Front Balance Shaft Seal (12005350)Front Balance Shaft Seal (12005350) by AJUSA®. Designed utilizing the latest technology, this product by AJUSA features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is manufactured...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$16.68
- Corteco®Balance Shaft Seal (12001192B)Balance Shaft Seal by Corteco®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$8.99
- Corteco®Balance Shaft Seal (19027868B)Balance Shaft Seal (19027868B) by Corteco®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$3.27
- NOK®Auxiliary Shaft Seal (49442374)Auxiliary Shaft Seal by NOK®. Oil seals serve to prevent the leakage not only of lubricants, but also water, chemicals, and gas from "gaps" in machinery. Oil seals also serve to prevent the intrusion of dust, soil and sand from the...OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price$7.59
- Mopar®Balance Shaft SealBalance Shaft Seal by Mopar®. Want your prized possession to look and perform the way it was designed to? Then top-of-the-line Mopar automotive parts and accessories are for you. Made using the latest manufacturing technology to meet...Ideal solution to keep your vehicle in top shapeCrafted from premium-grade materials and the latest technology$9.29 - $31.82
During engine operation, there are several forces created that affect engine balance and result in vibration: The rotating mass of the connecting rod and piston at the offset crank throw and the crankshaft counterweight, the up and down reciprocating forces of each piston and connecting rod in the cylinders, and the forces created when each cylinder is fired. These forces can be countered by engine design or the use of balance shafts.
The number of cylinders, engine configuration, and the point at which the cylinder fires all play a part in how well an engine is balanced. For example, a typical V8 engine is well balanced because the angle between the cylinder banks is 90 degrees, and a cylinder fires every 90 degrees of crankshaft rotation. Flat engines are perfectly balanced because the forces in each cylinder bank cancel each other out, and the engine fires every 180 degrees.
However, some engines, notably 4-cylinder in-line and V6 engines, have forces that can’t be counteracted by design alone, and this resulted in some engines produced in the past that had a reputation for high levels of roughness and vibration. Vehicle manufacturers have employed various methods to limit the effects of vibration, including soft motor mounts, and using 60 degree bank angles or split-pin crank throws on V6 engines, but the most common solution to the vibration problem has been the installation of balance shafts.
Balance shafts have eccentric weights that counteract the forces in the engine that create vibration. Like the camshaft, balance shafts must be perfectly timed with the rotation of the crankshaft for them to be effective. An engine will have one or more balance shafts, with most 4-cylinder engines having two, and V6 engines with one. Balance shafts can be driven by a chain or belt. Both use tensioners to maintain belt adjustment. Belt arrangements usually include an idler pulley, and chain layouts have chain guides.
Balance shaft belts and chains can suffer from the same symptoms as their cam drive counterparts. Belts should be periodically replaced and because removal is generally required to access the timing belt, the balancer belt should be replaced at the same time. Balance shaft chains can elongate and timing can be thrown off, which can result in vibration. No matter what kind of balance shaft setup you have, we have the replacement parts for the job including belts, chains, sprockets, tensioners, pulleys, guides, seals, and gaskets. All parts are made to OE specs so you can be assured of precise fit and perfect function.
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