Engine Balance Shafts
- National®Intermediate Shaft Repair SleeveIntermediate Shaft Repair Sleeve by National®. Designed utilizing the latest technology, this product by National 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$25.34
- National®Intermediate Shaft SealIntermediate Shaft Seal by National®. Designed utilizing the latest technology, this product by National 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$6.28 - $12.75
- Ishino®Balance Shaft SealBalance Shaft Seal by Ishino®. 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$4.08 - $7.93
- Ishino®Intermediate Shaft SealIntermediate Shaft Seal by Ishino®. 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$3.85
- Nippon Reinz®Auxiliary Shaft SealAuxiliary Shaft Seal by Nippon Reinz®. 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$4.74
- SKF®Balance Shaft SealBalance 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$7.24
- Stone®Balance Shaft SealBalance Shaft Seal by Stone®. 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 deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$0.89
- Corteco®Balance Shaft SealBalance 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$3.27 - $17.79
- Corteco®Intermediate Shaft SealIntermediate 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$11.00
- GMB®Balance Shaft Belt TensionerBalance Shaft Belt Tensioner by GMB®. 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$8.42 - $10.68
- NOK®Auxiliary Shaft SealAuxiliary 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 - $10.00
- NOK®Balance Shaft SealBalance Shaft Seal by NOK®. 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$8.31 - $15.09
- Timken®Auxiliary Shaft Repair SleeveAuxiliary Shaft Repair Sleeve by Timken®. Designed utilizing the latest technology, this product by Timken 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$28.45 - $48.01
- Timken®Auxiliary Shaft SealAuxiliary Shaft Seal by Timken®. Designed utilizing the latest technology, this product by Timken features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is manufactured to meet or...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$6.07 - $15.15
- AJUSA®Balance Shaft SealBalance Shaft Seal 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 meet or exceed...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$9.26 - $23.31
- Aftermarket®Balance Shaft Seal RetainerBalance Shaft Seal Retainer 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$2.14
- CRP®Auxiliary Shaft SealAuxiliary 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 - $3.03
- 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
- ACDelco®Genuine GM Parts™ Balance ShaftGenuine GM Parts™ Balance Shaft by ACDelco®. 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...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$61.79 - $1,018.42
- ACDelco®Genuine GM Parts™ Balance Shaft ChainGenuine GM Parts™ Balance Shaft Chain by ACDelco®. 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...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$33.05 - $53.12
- ACDelco®Genuine GM Parts™ Balance Shaft Chain TensionerGenuine GM Parts™ Balance Shaft Chain Tensioner by ACDelco®. 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...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$35.23 - $35.78
- ACDelco®Genuine GM Parts™ Balance Shaft Chain GuideGenuine GM Parts™ Balance Shaft Chain Guide by ACDelco®. 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...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$11.41 - $37.26
- ACDelco®Genuine GM Parts™ Engine Balance Shaft SprocketGenuine GM Parts™ Engine Balance Shaft Sprocket by ACDelco®. 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...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$9.44 - $39.27
- Genuine®Balance Shaft BeltBalance Shaft Belt by Genuine®. If your engine parts is 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 store. On our website...OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price$33.52 - $60.02
- MTC®Balance Shaft Seal RetainerBalance Shaft Seal Retainer by MTC®. If you’re looking for replacement parts at reasonable prices, then MTC parts are the way to go. Manufactured by highly qualified experts who follow stringent quality standards, these parts perform...Ideal solution to restore the performance of your vehicleManufactured using high-strength materials for maximum reliability$3.25
- NOK®Engine Balance Shaft SealEngine Balance Shaft Seal by NOK®. Is your vehicle feeling down on power? Do you see dark puddles on the ground when you park? Is your CHECK ENGINE light on? Your engine may be in need of repair, but before you waste your time and gas...OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price$14.90
- Cloyes®Engine Timing Set (C927)Engine Timing Set (C927) by Cloyes®. Keep your engine’s valvetrain in perfect time with Cloyes, the world leader in timing drive systems. No matter whether you need a timing gear or complete timing gear set, Cloyes has the OE quality...Maintains critical valve timingPrevents performance problems and possible engine damage that can result from incorrect timing$28.52
- Dodge OEEngine Oil Pump Chain (4884870AB)Engine Oil Pump Chain (4884870AB) by Dodge OE. If you want to ensure peak performance of your Dodge mile after mile and keep it looking brand new, rely on superior-quality Dodge OE parts and accessories. They match the parts and...Genuine Dodge OEM part designed for your make, model, and yearCrafted from premium-quality materials for long-lasting service$51.36
- Mopar®Rear Center Intermediate Shaft (55351285AC)Rear Center Intermediate Shaft (55351285AC) 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...Ideal solution to keep your vehicle in top shapeCrafted from premium-grade materials and the latest technology$274.76
- Mopar®Front Center Intermediate Shaft (52114636AB)Front Center Intermediate Shaft (52114636AB) 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...Ideal solution to keep your vehicle in top shapeCrafted from premium-grade materials and the latest technology$126.44
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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