2025 Freightliner MT45 Car Parts & Accessories

You have come to the right place if you need new or replacement parts for your 2025 MT45. Advance Auto carries over 20 aftermarket parts for your 2025 Freightliner MT45, along with original equipment manufacturer (OEM) parts. You will find amazing prices on 2025 MT45 Interior Products and Engine Parts. Plus, our selection of 2025 Transmission Parts for your MT45 are some of the lowest in the market.

Find replacement parts and upgrades for your 2025 Freightliner MT45. Use our customer reviews of Exhaust Parts parts and others, along with user ratings on the many of the products we offer. You won’t find an easier way to shop for 2025 Freightliner MT45 performance parts, 2025 Freightliner MT45 body parts, interior components, or any type of part for that matter. Get your MT45 upgraded or back in pristine shape by shopping Advance Auto Parts.

Best-Selling Batteries and Chargers for your 2025 Freightliner MT45

Upgrade your 2025 Freightliner MT45 with one of the 5 best-selling parts in stock, starting at just $149.99.

DieHard HD Battery – Battery: 31T Group Size, 1 Year Warranty, 950 CCA, 1140 CA, 175 Minute Reserve Capacity (Part No.31S30)

Battery: 31T Group Size, 1 Year Warranty,  950 CCA,  1140 CA,  175 Minute Reserve Capacity

from

$174.99
DieHard Heavy Duty batteries deliver the starting power your heavy duty applications need. These batteries are designed for commercial trucks, heavy duty and agricultural applications.

Product Features:
  • Full frame stamped positive grid design provides increased corrosion resistance and superior cranking power.
  • High-density paste improves cycling capability
  • Polypropylene ribbed case and reinforced end-walls for extra durability
  • Anchor bonding locks elements in place to dramatically improve life with superior vibration resistance
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DieHard HD Battery – Battery: 31T Group Size, 1 Year Warranty, 1000 CCA, 1190 CA, 185 Minute Reserve Capacity (Part No.31HDS30)

Battery: 31T Group Size, 1 Year Warranty,  1000 CCA,  1190 CA,  185 Minute Reserve Capacity

from

$182.99
DieHard Heavy Duty batteries deliver the starting power your heavy duty applications need. These batteries are designed for commercial trucks, heavy duty and agricultural applications.

Product Features:
  • Full frame stamped positive grid design provides increased corrosion resistance and superior cranking power.
  • High-density paste improves cycling capability
  • Polypropylene ribbed case and reinforced end-walls for extra durability
  • Anchor bonding locks elements in place to dramatically improve life with superior vibration resistance
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Optima – Yellow Battery: 31T Group Size, 900 CCA, 1125 CA, 155 Minute Reserve Capacity, Deep-Cycle (Part No.D31T-1125)

Yellow Battery: 31T Group Size, 900 CCA, 1125 CA, 155 Minute Reserve Capacity, Deep-Cycle

from

$399.99
The OPTIMA YELLOWTOP high-performance AGM battery is the ULTIMATE POWER SOURCE and one of the few true dual-purpose automotive batteries available. With premium cranking power and impressive cycling capability, this heavy-duty battery is ideal for trucks with winches, vehicles with high-demand electronics and audio systems, commercial vehicles and heavy equipment. Key benefits of OPTIMA YELLOWTOP batteries include deep-cycling battery and OPTIMAL starting power, up to 3x longer service life, 15x more resistant to vibration, leak proof, mountable in virtually any position, maintenance-free, and more than 300 discharge / recharge cycles. OPTIMA YELLOWTOP batteries work well for tractors or forklifts.

Product Features:
  • Faster recharging capabilities
  • Maintenance free for maximum convenience
  • Completely non-spillable, mountable in many positions
  • 15x the vibration resistance of a standard flooded battery
  • Up to 3 times longer life vs. standard flooded batteries
  • SPIRALCELL TECHNOLOGY with 99.99% pure lead delivers more power and consistently outperforms conventional flat-plate batteries
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DieHard HD Battery – Battery: 31T Group Size, 1 Year Warranty, 825 CCA, 1000 CA, 200 Minute Reserve Capacity (Part No.NG31CS)

Battery: 31T Group Size, 1 Year Warranty,  825 CCA,  1000 CA,  200 Minute Reserve Capacity

from

$259.99
DieHard Heavy Duty batteries deliver the starting power your heavy duty applications need. These batteries are designed for commercial trucks, heavy duty and agricultural applications.

Product Features:
  • Full frame stamped positive grid design provides increased corrosion resistance and superior cranking power.
  • High-density paste improves cycling capability
  • Polypropylene ribbed case and reinforced end-walls for extra durability
  • Anchor bonding locks elements in place to dramatically improve life with superior vibration resistance
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DieHard HD Battery – Battery: 31T Group Size, 1 Year Warranty, 750 CCA, 935 CA, 180 Minute Reserve Capacity (Part No.31XS-30)

Battery: 31T Group Size, 1 Year Warranty,  750 CCA,  935 CA,  180 Minute Reserve Capacity

from

$149.99
DieHard Heavy Duty batteries deliver the starting power your heavy duty applications need. These batteries are designed for commercial trucks, heavy duty and agricultural applications.

Product Features:
  • Full frame stamped positive grid design provides increased corrosion resistance and superior cranking power.
  • High-density paste improves cycling capability
  • Polypropylene ribbed case and reinforced end-walls for extra durability
  • Anchor bonding locks elements in place to dramatically improve life with superior vibration resistance
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Most Popular 2025 Freightliner MT45 Filters and PCVs

Improve your MT45’s performance by choosing from our wide selection of 3 OEM and aftermarket auto parts specifically for your 2025 Freightliner MT45.

Carquest Premium – Oil Filter: Ideal for Synthetic Oil, Protection up to 10,000 Miles (Part No.84502)

Oil Filter: Ideal for Synthetic Oil, Protection up to 10,000 Miles

from

$9.99
Carquest Premium oil filters are built for durability, utilizing enhanced components to protect engines for the extended drain intervals of modern vehicles using conventional or synthetic lubricants. Our oil filters are built with synthetic blend media that provides 2X the capacity and up to 10,000 miles of protection. Carquest Premium filters feature silicone sealing gaskets for better performance in extreme temperatures. Carquest Premium oil filters meet or exceed original equipment (O.E.) specifications and meet the requirements for maintaining a new vehicle warranty.

Product Features:
  • Protection for up to 10,000 miles
  • Synthetic blend media provides 99.5% efficiency at 20 microns and 2X capacity vs. Standard filters
  • Solid metal end caps are designed to be long lasting
  • Silicone anti-drain back valve for engine start-up protection
  • Heavy-duty steel baseplate provides additional strength to resist leakage
  • Heavy gauge steel canister withstands high pressure operating conditions
  • Silicone sealing gasket performs better in extreme temperature conditions and longer drain intervals (silicone gasket is new feature introduced as a running change)
  • Meets requirements for maintaining new vehicle warranties
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Carquest Standard – Oil Filter: Ideal for Conventional Oil, Protection up to 5,000 Miles (Part No.R84502)

Oil Filter: Ideal for Conventional Oil, Protection up to 5,000 Miles

from

$5.79
Carquest Standard oil filters are designed to meet the original equipment (O.E.) specifications and the requirements for maintaining new vehicle warranties. Our oil filters use nitrile sealing gaskets and solid steel baseplates to prevent oil leaks. Carquest Standard oil filters feature cellulose media for increased efficiency at capturing dirt and debris. Each Carquest Standard oil filter is built with rugged components for durability and utilizes multifiber, high-density media for optimal engine protection up to 5,000 miles.

Product Features:
  • Protection for up to 5,000 miles
  • Cellulose media provides 95.1% efficiency at 20 Microns for increased engine protection
  • Nitrile anti-drain back valve for engine start-up protection
  • Lathe cut nitrile sealing gasket prevents leaks
  • Double fluted spiral wound center tube allows maximum flow and provides additional strength
  • Solid steel baseplate provides additional strength to resist leakage
  • Meets requirements for maintaining new vehicle warranties
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Carquest EP Filters – Oil Filter: Extended Performance Up To 20,000 Miles (Part No.P84502)

Oil Filter: Extended Performance Up To 20,000 Miles

from

$15.99
Unlock the full potential of your engine with our Carquest Extended Performance Oil Filter – designed for those who demand more from their vehicle. Engineered with advanced filtration technology, this oil filter provides superior protection for up to 20,000 miles, keeping your engine running clean and efficient for longer. Whether you’re driving on highways or navigating city streets, the Carquest Extended Performance Oil Filter ensures your engine is protected, allowing you to drive with confidence. Get more out of your oil change with the filter that goes the distance.

Product Features:
  • Engineered for protection for up to 20,000 miles when used with the appropriate motor oil
  • Engineered for higher flow
  • High-flow full synthetic media
  • Hydrogenated nitrile gasket for extended performance
  • Textured surface for easy grip
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Top-Selling MT45 Performance and Racing Products

Shop now for the best auto parts and accessories for your 2025 MT45, starting at $391.99, and ensure your Freightliner stays in top shape.

Dorman – HD Solutions – Nitrogen Oxide Sensor Outlet Of Diesel Particulate Filter (Part No.904-6006)

Nitrogen Oxide Sensor Outlet Of Diesel Particulate Filter

from

$391.99
This NOx sensor has been made to match the original equipment sensor on certain vehicle years, makes and models, properly restoring nitrogen oxide detection to comply with emissions regulations.

Product Features:
  • Direct replacement – this replacement NOx sensor matches the function and performance of the original sensor on specified vehicles
  • Restores performance – properly repairs nitrogen oxide detection to comply with regulations
  • Application specific – reverse engineered from the original design on certain vehicle years, makes and models
  • Trustworthy quality – backed by team of engineers and quality specialists in the United States
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In-Demand Engine Parts for the Freightliner MT45

Choose from 3 high-quality Engine Parts for your 2025 Freightliner MT45 priced between $26.99 and $104.99.

Dorman – HD Solutions – Crank Case Pressure Sensor (Part No.904-7119)

Crank Case Pressure Sensor

from

$62.99
This engine crankcase pressure sensor is designed to match the fit and function of the original sensor on specified vehicles, and is engineered for durability and reliable performance.

Product Features:
  • Direct replacement – this engine crankcase pressure sensor is designed to match the fit and function of the original sensor on specified vehicles
  • Ideal solution – this sensor is a reliable replacement for an original part that has failed due to fatigue or electrical malfunction
  • Durable construction – this sensor is made from quality components to ensure reliable performance and a long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
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Felpro – Engine Valve Cover Gasket Set (Part No.VS 50907 R)

Engine Valve Cover Gasket Set

from

$26.99
Fel-Pro gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.

Product Features:
  • DESIGNED FOR IMPERFECT SEALING SURFACES – Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces
  • SUPERIOR SEAL – Manufactured with rubber compounds to help ensure a consistent and long-life seal
  • PRECISE DESIGN – Engineered to work with the embossed cover and pan flanges
  • PREVENTS OVERTIGHTENING – Features compression limiters incorporated into the design to help eliminate overtightening (application specific)
  • OE-STYLE REPLACEMENT GASKET – Engineered for OE-style molded rubber gasket replacement
  • EVERY PART FOR THE REPAIR – Fel-Pro gasket sets include every part needed for the repair unless otherwise noted
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Gates – Green Stripe Ring Retained Straight Turbocharger Hose (Part No.26201)

Green Stripe Ring Retained Straight Turbocharger Hose

from

$104.99
Product Features:
  • Four-layer silicone construction with aramid fiber reinforcement for maximum durability
  • Meets or exceeds OEM specifications
  • Temperature Range: -60 Deg. F to +500 Deg. F (-51 Deg. C to +260 Deg. C)
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Highly-Rated Belts and Hoses for 2025 Freightliner MT45

Discover top-rated parts for your 2025 Freightliner MT45.

Gates – FleetRunner Heavy-Duty Micro-V Serpentine Drive Belt (Part No.K080830HD)

FleetRunner Heavy-Duty Micro-V Serpentine Drive Belt

from

$77.99
Gates FleetRunner Micro-V Belts are designed for the toughest applications. FleetRunner construction provides superior flexibility, stability, load capacity, and unsurpassed belt life. Patented materials deliver peak performance at extreme prolonged operating temperatures, making this belt the ultimate problem solver. An advanced blend of EPDM rubber technology withstands the modern threats of deterioration from increased exposure to ozone and water-based coolants. FleetRunner does this all while providing the lowest cost per mile for fleets, including 3/4 and 1 ton pickups.

Product Features:
  • Patented material provides peak performance at prolonged extreme operating temperatures
  • Construction resists cracking and wear, even at extreme temperatures
  • Special compound provides unmatched flexibility, stability, load carrying capacity and belt life
  • Troubleshooting designed for the toughest applications
  • Consistently outperforms other heavy-duty serpentine belts on the market
  • Designed to save your fleet money and reduce downtime
  • Tensioner Replacement is Recommended (if equipped)
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Litens – Idler Pulley: Direct Fit, Steel, 70mm Diameter, w/ Hardware (Part No.900882A)

Idler Pulley: Direct Fit, Steel, 70mm Diameter, w/ Hardware

from

$40.99
This pulley is manufactured by Litens Automotive the inventor of the first automatic belt tensioner in 1979 and today the world’s largest supplier of Original Equipment (O.E.) belt tensioning and routing products. This pulley is produced for serpentine belt routing applications for newer Buick 2.0L and 2.4L engine applications. This pulley conforms to original equipment material, tolerances, and specifications. The part is produced based on the O.E. specified design and meets all performance and durability requirements. Heavy duty steel construction for long life and trouble-free performance. Applications include G.M.. This pulley assembly Includes a new mounting bolt as well as a new washer/dust shield for ease of installation. Crosses to OE# 12605492 and others. Litens is the world’s largest supplier of original equipment (O.E.) power transmission products. At Litens, we design systems that are more efficient, resulting in tangible fuel economy/emissions benefits. Litens holds over 2000 patents and continues to respond to the ever-changing automotive industry by investing heavily in new technology, facilities, and people. 90% of our line is made of products coming from the OE manufacturer, which makes the Litens Tensioning Products portfolio the purest OE tensioning line in the North American aftermarket.

Product Features:
  • Manufactured by Litens, the largest original equipment tensioner and pulley supplier in the world, to ensure proper form, fit, and performance.
  • Heavy Duty Steel Pulley with close tolerance ball bearing pocket and Electro-deposited coating for superior corrosion resistance.
  • Includes all mounting hardware – Bolt and large metal dust shield.
  • Pulley Assemblies save time and ensure “like new” performance
  • Running surface designed and engineered for proper belt tracking.
  • 70.0mm O.D.; 16.0mm I.D; 30.8mm smooth running surface; steel. For use with a 6- rib serpentine belt. Includes bolt, 2 dust shields, and retainer.
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Gates – FleetRunner Heavy-Duty Automatic Belt Drive Tensioner (Part No.38702)

FleetRunner Heavy-Duty Automatic Belt Drive Tensioner

from

$166.99
Product Features:
  • Optimized components engineered for maximum strength and durability
  • Patented design provides superior belt alignment and tension for improved drive efficiency and life
  • The patented labyrinth seal prevents contamination of internal parts for maximum durability and life.
  • Long-life steel pulleys with dust cover to protect internal bearings from contamination
  • Double-row bearings carry more load and last up to 3 times longer than two individual bearings
  • Round chrome-silicone torsion spring for less fatigue than coil spring designs.
  • Patented damping mechanism provides maximum stability, reducing vibration and increasing the life of the belt, tensioner and other accessory drive components
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Gates – Micro-V Serpentine Drive Belt (Part No.K061045)

Micro-V Serpentine Drive Belt

from

$51.99
Import or domestic, car or truck, every vehicle can depend on the superior quality of Gates precision fit Micro-V belts. With advanced technology that matches the OE size, construction and materials, Gates Micro-V ensures optimal vehicle performance.

Product Features:
  • The special belt construction eliminates noise, reduces tension loss and solves transmission problems.
  • EPDM rubber constructions resist cracking on the rib surface
  • Meets or exceeds all OEM specifications
  • It is recommended to replace the tensioner (if equipped)
  • Unique form grinding of each individual belt assures precise dimensional control.
  • Meets or exceeds SAE J1459, SAE J2432, and SAE J1596 specifications.
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Litens – Idler Pulley: Direct Fit, Steel, 90mm Diameter, w/ Hardware (Part No.900613A)

Idler Pulley: Direct Fit, Steel, 90mm Diameter, w/ Hardware

from

$50.99
Litens Automotive is the original equipment supplier for the 2014-Present Chevrolet Silverado 1500/GMC Sierra 1500 4.3L (Lower-Idler) This replacement pulley was made by the same OE production supplier and therefore has the same performance characteristics as the original O.E. part. This pulley is produced for serpentine belt routing applications and is made of high strength steel for improved life and durability. Includes installation bolt, dust shield and double row ball bearing for extra strength and durability. Litens is the world’s largest supplier of original equipment (O.E.) power transmission products. At Litens, we design systems that are more efficient, resulting in tangible fuel economy/emissions benefits. Litens holds over 2000 patents and continues to respond to the ever-changing automotive industry by investing heavily in new technology, facilities, and people. 90% of our line is made of products coming from the OE manufacturer, which makes the Litens Tensioning Products portfolio the purest OE tensioning line in the North American aftermarket.

Product Features:
  • Manufactured by the Original Equipment supplier
  • Heavy Duty Steel Pulley with close tolerance two ball bearings in the pocket for extra strength anf durability. Is also has Electro-deposited coating for superior corrosion resistance.
  • Heavy duty polyacrylic seals and synthetic grease for added enhanced durability
  • Installation instructions included
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Litens – Accessory Drive Belt Tensioner – Original Equipment Quality (Part No.910588A)

Accessory Drive Belt Tensioner - Original Equipment Quality

from

$168.99
This Litens supplied tensioner is manufactured to original equipment specifications. Heavy duty steel pulley construction ensures long life and trouble-free performance. This tensioner meets or exceeds all original equipment fit, form, and performance characteristics. For maximum performance and durability, always use genuine Litens components. Litens is the world’s largest supplier of original equipment (O.E.) power transmission products. At Litens, we design systems that are more efficient, resulting in tangible fuel economy/emissions benefits. Litens holds over 2000 patents and continues to respond to the ever-changing automotive industry by investing heavily in new technology, facilities, and people. 90% of our line is made of products coming from the OE manufacturer, which makes the Litens Tensioning Products portfolio the purest OE tensioning line in the North American aftermarket.

Product Features:
  • Manufactured by Litens, the largest original equipment tensioner and pulley supplier in the world, to ensure proper form, fit, and performance.
  • Internal “round spring” technology to provide constant belt tension and alignment throughout its service life.
  • Heavy duty steel pulley construction
  • OE-spec sealed ball bearings with synthetic grease and double lip seals for long life
  • Installation instructions included
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Gates – Micro-V Serpentine Drive Belt (Part No.K080830)

Micro-V Serpentine Drive Belt

from

$60.99
Import or domestic, car or truck, every vehicle can depend on the superior quality of Gates precision fit Micro-V belts. With advanced technology that matches the OE size, construction and materials, Gates Micro-V ensures optimal vehicle performance.

Product Features:
  • Special belt construction eliminates belt noise, reduces tension loss and solves problem drive applications
  • EPDM rubber constructions resist cracking on the surface of the ribs
  • Meets or exceeds all original equipment manufacturer specifications.
  • Tensioner Replacement is Recommended (if equipped)
  • Unique form grinding of each individual belt assures precise dimensional control.
  • Meets or exceeds SAE J1459, SAE J2432, and SAE J1596 specifications.
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Gates – Green Stripe Heavy-Duty Straight Heater Hose (Sold by foot) (Part No.28441)

Green Stripe Heavy-Duty Straight Heater Hose (Sold by foot)

from

$4.79
Heavy-duty construction assures dependable operation in truck, bus and off-road equipment heater systems. For a maintenance free connection, install with Power-Grip SB clamps. Approved for marine applications.

Product Features:
  • Green strip construction offers the best cost per mile
  • Abrasion resistant cover
  • Engineered with materials to resist electrochemical degradation
  • Reduces water loss from water permeating the hose wall and cover
  • Exceeds SAE 20R1 Type EC (Class D-1 tube and cover Standard Wall)
  • Temperature Range: -40 Deg. F to +275 Deg. F (-40 Deg. C to +135 Deg. C)
  • Note: For a maintenance-free connection, use PowerGrip SB clamps
  • Caution: Do not use for fuel or oil transportation applications.
  • PLEASE NOTE: Item is priced and sold by the foot. See store for details.
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