Engine Balance Shafts
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- DNJ®Balance Shaft SealBalance Shaft Seal by DNJ®. 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 perfect fit for a...Designed to replace your malfunctioning partsHelps get your vehicle back to it's original performance$7.49
- SKF®Auxiliary Shaft SealAuxiliary 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...OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price$5.20 - $10.31
- Aftermarket®O-Ring for Intermediate ShaftO-Ring for Intermediate Shaft by Aftermarket®. 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...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$4.65
- Kaco®Balance Shaft SealBalance Shaft Seal by Kaco®. 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$14.43
- Genuine®Axle Shaft Seal (33-10-7-564-416)Axle Shaft Seal (33-10-7-564-416) by Genuine®. If your driveline system parts are in need of repair, don’t compromise the performance and safety of your car with suspect, off-brand replacement parts from the local auto parts chain...Designed to restore your vehicle’s driveline systemGenuine OE replacement parts from the OE manufacturer$123.50
- Corteco®Alternating Twist Type Balance Shaft Seal (19026317B)Alternating Twist Type Balance Shaft Seal (19026317B) 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....Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$12.25
- Corteco®Axle Shaft Seal (01033878B)Axle Shaft Seal (01033878B) 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$8.32
- Corteco®Axle Shaft Seal (01031731B)Axle Shaft Seal (01031731B) 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$9.21
- Corteco®Axle Shaft Seal (01025572B)Axle Shaft Seal 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$17.79
- Corteco®Axle Shaft Seal (01031902B)Axle Shaft Seal (01031902B) 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$4.20
- Corteco®Polyacrylate Balance Shaft Seal (19037089B)Polyacrylate Balance Shaft Seal (19037089B) 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...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$8.72
- Corteco®Rear Nitrile Butadiene Rubber Output Balance Shaft Seal (01019150B)Rear Nitrile Butadiene Rubber Output Balance Shaft Seal (01019150B) 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...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$5.49
- Mopar®Front Balance Shaft Seal (MD343565)Front Balance Shaft Seal (MD343565) 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...Ideal solution to keep your vehicle in top shapeCrafted from premium-grade materials and the latest technology$12.24
- Genuine®Balance Shaft Seal (31258066)Balance Shaft Seal by Genuine®. Genuine is here to give you the ultimate in quality and reliability at a cost you can afford. Designed utilizing the latest technologies and manufactured from premium materials using state-of-the-art...Made with precision and quality in mindDesigned to meet your specific needs$28.13
- Genuine®Balance Shaft Seal (11-12-7-507-217)Balance Shaft Seal (11-12-7-507-217) by Genuine®. Location: Brake Booster Vacuum Pump to Valve Cover. Genuine is here to give you the ultimate in quality and reliability at a cost you can afford. Designed utilizing the latest...Made with precision and quality in mindDesigned to meet your specific needs$43.41
- Mahle®Auxiliary Shaft Seal (GS33828)Auxiliary Shaft Seal (GS33828) 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...Made with precision and quality in mindDesigned to meet your specific needs$9.84
- Mahle®Balance Shaft Seal (68079)Balance Shaft Seal (68079) 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$9.01
- Beck Arnley®Balance Shaft Seal (0523714)Balance Shaft Seal by Beck Arnley®. For one hundred years, Beck Arnley has been providing premium OE quality parts for vehicles. Beginning with motorcycle parts in 1914 and transitioning to import vehicles in the 1950’s, brand...OE quality products from top original equipmentTop quality materials$7.68
- DNJ Engine Components®OE Balance Shaft Seal (CS244A)OE Balance Shaft Seal by DNJ Engine Components®. 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...Designed to replace your malfunctioning partsHelps get your vehicle back to it's original performance$7.49
- SKF®Auxiliary Shaft Seal (11705)Auxiliary 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...Made with precision and quality in mindDesigned to meet your specific needs$10.31
- SKF®Auxiliary Shaft Seal (9068)Auxiliary 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...Made with precision and quality in mindDesigned to meet your specific needs$5.20
- SKF®Auxiliary Shaft Seal (9717)Auxiliary 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...Made with precision and quality in mindDesigned to meet your specific needs$9.97
- AJUSA®Center Balance Shaft Seal (12015650)Center Balance Shaft Seal (12015650) 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$18.83
- AJUSA®Driver Side Balance Shaft Seal (12021750)Driver Side Balance Shaft Seal (12021750) 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...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$23.31
- Corteco®ACM Polyacrylate Balance Shaft Seal (01018331B)ACM Polyacrylate Balance Shaft Seal (01018331B) 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....Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$8.07
- Aftermarket®OE O-Ring for Intermediate Shaft (999-707-571-40)OE O-Ring for Intermediate Shaft by Aftermarket®. 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$4.65
- German®Passenger Side Balance Shaft Seal (999-113-281-40)Passenger Side Balance Shaft Seal by German®. Keep your vehicle working in top condition with premium parts by German. Made using innovative technologies and the highest quality materials, they deliver excellent performance and...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$10.03
- Mopar®Balance Shaft Seal (J3087189)Balance Shaft Seal (J3087189) 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...Ideal solution to keep your vehicle in top shapeCrafted from premium-grade materials and the latest technology$31.82
- Mopar®Balance Shaft Seal (MD168059)Balance 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$28.83
- Mopar®Balance Shaft Seal (J0719273)Balance Shaft Seal (J0719273) 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...Ideal solution to keep your vehicle in top shapeCrafted from premium-grade materials and the latest technology$23.75
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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