1991 BMW 525i Engine Parts

KS crankshaft main bearing sets provide maximum load-bearing capacity, anti-seize and low wear and friction. KS main bearing sets are manufactured with aluminum-tin sliding material and the innovative aluminum-zinc-bismuth alloy in which bismuth replaces lead. From the strands continuously cast on site, strip is generated in defined and coordinated rolling and annealing operations for subsequent cladding. The various steel-aluminum composites are finally produced by roll bonding. Innovative coatings also ensure optimal running-in behavior and low-wear continuous running. The spectrum of possible surface coatings at KS Gleitlager extends from galvanic films deposited electro-chemically and sputter layers applied electro-physically in a high vacuum, to synthetic antifriction coatings.

Product Features:

• Original Equipment Manufacturer
• Maximum Load-Bearing Capacity
• Low Wear and Friction
• Advanced Surface Coatings

Goetze OE piston rings for gasoline and diesel engines, are developed for automobile, light commercial vehicle and heavy-duty applications, come in a wide range of sizes, include the first ring sets introduced for Euro4-compliant engines. The end gap can be a straight cut, angled cut or gas tight type for improved sealing. Radial pressure distribution greatly influences ring performance therefore we modify the pressure distribution according to the individual application. The wear-resistance and running-in behavior of the outer ring surface is defined by selecting from various coating options, which include the high-performance electroplated, thermally sprayed and PVD coatings. Goetze modern oil control rings scrape off oil from the cylinder wall, leaving just the required amount for lubrication. The running surface is the contour of the ring facing the cylinder surface. The objective of this running surface profile is to create a lubrication slot with a hydrodynamic film which the piston ring can slide on without touching the other surface. An optimized asymmetrical-barrelled running surface ensures low lubricant consumption even after a very long running time. Goetze piston rings have anti-scuffing properties that promote smooth engine operation, reduced oil consumption and long engine life. In addition, the Goetze process helps prevent materials from detaching and cracking and aids in environmental protection

Product Features:

• Maximum durability
• High wear and corrosion resistance
• Excellent heat-conducting capacity
• Optimal fit

The Febi Oil FIller cap is an ideal high quality aftermarket replacement that is manufactured to meet or exceed OE specifications for fit, form, and function.

Product Features:

• Premium aftermarket replacement
• Provides performance and dependability
• Manufactured to meet OE specifications

Manufactured with tough, wear-resistant fabric, high-tensile strength cord and a molded tooth surface, the Dayco timing belt provides consistent slip-proof power transfer and high resistance to oil and engine heat. The belt features a molded cog design which runs quieter and is more economical and a premium, high modulus glass fiber cord that delivers precise length stability to keep the engine running smoothly over the life of the belt.

Product Features:

• Designed for specific OHC and DOHC applications that range from normal service to high performance, high temperature engines
• Offers noise reduction and minimum dimensional tolerances for precise valve timing
• Engineered with reduced elongation for maximum durability, high abrasion resistance and better performance
• This specific belt is for applications with standard temperature and load requirements with a reinforced round tooth profile for more demanding drives

KS rod bearing sets provide maximum load-bearing capacity, anti-seize and low wear and friction. KS rod bearing sets are manufactured with aluminum-tin sliding material and the innovative aluminum-zinc-bismuth alloy in which bismuth replaces lead. From the strands continuously cast on site, strip is generated in defined and coordinated rolling and annealing operations for subsequent cladding. The various steel-aluminum composites are finally produced by roll bonding. Innovative coatings also ensure optimal running-in behavior and low-wear continuous running. The spectrum of possible surface coatings at KS Gleitlager extends from galvanic films deposited electro-chemically and sputter layers applied electro-physically in a high vacuum, to synthetic antifriction coatings.

Product Features:

• Original Equipment Manufacturer
• Maximum Load-Bearing Capacity
• Low Wear and Friction
• Advanced Surface Coatings

National® has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:

• Designed to repair damaged, grooved or worn shafts
• Durable stainless steel construction for corrosion-free sealing surface that surpasses most original shaft specifications
• Ideal for a shaft where indications of seal wear, such as tracks or grooves have developed
• Ultra-thin construction (0.01/0.25mm wall thickness) allows original seal size to be used with minimal additional lip loading
• Easy to install with removable flange and installation tool
• Installation tool reduces sleeve distortion and allows for installation without removal from the shaft

Timing Chain

The INA Timing Belt Tensioner is a direct fit OEM replacement that contains the same high quality craftsmanship and materials as the original equipment it replaces.

Product Features:

• OE-Equivalent and a direct fit application
• High quality sealed precision bearing assembly
• OE specified pulley
• Durable long life performance

National® has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:

• Designed to repair damaged, grooved or worn shafts
• Durable stainless steel construction for corrosion-free sealing surface that surpasses most original shaft specifications
• Ideal for a shaft where indications of seal wear, such as tracks or grooves have developed
• Ultra-thin construction (0.01/0.25mm wall thickness) allows original seal size to be used with minimal additional lip loading
• Easy to install with removable flange and installation tool
• Installation tool reduces sleeve distortion and allows for installation without removal from the shaft

MAHLE gaskets provide world class sealing products trusted by OEMs & Technicians around the globe.

Product Features:

• All MAHLE gaskets meet or exceed the original equipment specifications providing the finest sealing products available
• MAHLE gaskets utilizes OE equivalent or better materials in all our gaskets
• Cylinder head bolt set (GS) contains the head bolts necessary to replace one cylinder head. Torque-to-yield bolts cannot be reused, new fasteners ensure proper sealing load when used with new MAHLE Original head gaskets.
• The contents of MAHLE gaskets are packaged in shrink wrapped tray, giving you the added security of knowing that you have the right parts, prior to opening the package

Valve Cover Mount

Position Sensor O-Ri

Approved materials for increased durability in even the most extreme temperatures. All MotoRad Coolant Temperature Sensors are designed to meet or exceed OEM specifications at our ISO TS16949 manufacturing facilities.

Product Features:

• 100% factory resistance calibrated to ensure precision tolerances, resulting in extremely accurate temperature for optimal performance
• Thread Sealant and/or O-ring pre-installed on applicable sensors to ensure leak free performance
• Brass sensor housing precision machined to meet or exceed OE thermal conductivity
• OE precision matched thermistor position for correct output parameters
• Extensive product testing includes salt spray, high/low temperature impact, thermal vibration, durability, static electricity, and micro tension, among other tests, to ensure all sensors meet or exceed OEM specifications.

Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust

Product Features:

• RIGHT TYPE — Valve stem seals designs are application-specific for the repair occasion using either deflector (umbrella) seals, O-ring style or positive seals
• QUALITY MATERIALS — Each valve stem seal features materials based on the specific application for your vehicle repair
• ENGINEERING EXPERTISE — Parts are reviewed, validated and approved by Fel-Pro engineers through rigorous research, development and testing
• INSTALLATION AID — Installation tool included to protect inner lip of seal from damage during seal installation
• COVERAGE — Available for domestic and foreign nameplate vehicles

Clevite is the number one name in replacement engine bearings – delivering on the track and in machine shops around the country. With track proven performance in engines with thousands of horsepower, it is obvious Clevite has the strength to handle any light vehicle application.As more and more OE manufacturers shift to aluminum bearings in OE engines, Clevite has introduced a new line of engine bearings designed to be the highest quality replacement bearings in the industry. Clevite Bimetal engine bearings carry on the tradition and reputation that Clevite has built throughout the course of time.Clevite Bimetal engine bearings feature a 100% lead free aluminum silicon bi-metal material, which includes 60% more silicon than the leading competitor’s bi-metal material for better conditioning of journal surfaces. These Bimetal bearings also offer greater wear resistance than the leading competitor’s bi-metal material, as well as greater seizure resistance. Clevite Bimetal bearings feature 100% bored ID’s for precision and surface characteristics and where appropriate – straight shell main bearings utilizing an “umbrella” groove that allows for superior oil control and improved pressure.Clevite® Bimetal engine bearings are of aluminum, tin, silicon Bimetal type of material and construction. These offer the engine rebuilder an Oe type of bearing for engines going into light duty applications. They are only recommended for applications where all engine components have been reconditioned to engine manufacturers original specifications.Bimetal engine bearings are not recommended for Heavy Duty service where heavy demands are placed on the engine or High Performance applications where Clevite TriMetal is still the ultimate performance choice.

Product Features:

• Original Equipment Manufacturer
• Maximum Load-Bearing Capacity
• Fatigue-Resistant, adaptable
• Resistant to Wear and Corrosion
• Advanced Surface Coatings

Freeze Plug

Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust

Product Features:

• 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
• Validated for fit, form, and function

Crank Position Sensor

High quality OE replacement part with all components needed to complete the job

Product Features:

• All the seals needed to complete the job
• Compatible with both R12 and R134a refrigerants
• Application specific
• SUV and rear air applications

Timing Guide Rail

National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:

• Low swell in hydrocarbon fluids
• Design type: spring loaded; multi-lip
• Provides good low temperature capability
• Temperature range: -40°F to 225°F; -40°C to 107°C
• Delivers quality and reliable performance for every type of repair

The Hutchinson Engine Mount is a direct fit OEM replacement that contains the same high quality craftsmanship and materials as the original equipment they replace.

Product Features:

• OE-Equivalent and a direct fit application.
• Meets or exceeds the OE specifications.
• Designed to reduce engine vibration and noise.

WARNING: This item cannot be returned for a replacement or refund if opened! Elring valve cover gaskets are engineered to meet the specific requirements of the installation site. Manufactured from high-quality materials, the gaskets are designed to provide excellent performance and reliability. Elring valve cover gaskets feature specially designed sealing lips. The overall layout of these lips is of particular importance when it comes to ensuring a high-quality seal and long service life. The same applies to the selection of premium-quality raw materials.

Product Features:

• High-quality design and engineering for perfect performance
• Premium materials and high-precision curing processes for perfect shore hardness and superior reliability
• Majority of Elring valve cover gaskets sold as kits for improved convenience and efficient installation

CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.

Product Features:

• Premium quality materials for longer service life
• Sealed connections (where applicable) to prevent environmental corrosion and performance issues
• Global coverage for import and/or domestic applications
• OE specified wire gauge to ensure a reliable electrical connection
• Designed to meet or exceed OE specifications in form, fit and function

Valve Keeper

ARP only uses premium grade 8740 alloy and a proprietary ARP2000 alloy that are rated for superior to “aircraft” quality alloy steels. Secondly, each stud is placed vertically into special racks and precisely heat-treated to 200,000 psi for the 8740 material and 220,000 psi for the ARP2000 material. This procedure ensures complete heat penetration and the results are far superior to those lesser quality studs from other manufacturers who just dump pieces in a basket and hope for the best. 

Product Features:

• 12mm 12-Point, 4mm Allen Socket Size(s)
• ARP2000
• Black Oxide
• BMW 2.5L, 3.0L, 3.2L
• Sold As A Kit

SEAL RING – COPPER

National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:

• Low swell in hydrocarbon fluids
• Design type: spring loaded; multi-lip
• Provides good low temperature capability
• Temperature range: -40°F to 225°F; -40°C to 107°C
• Delivers quality and reliable performance for every type of repair