1993 Peterbilt 375 Rear Shock and Struts

Enhance and Protect Your 1993 Peterbilt 375 with Quality Rear Shock and Struts

Maintaining the performance of your 1993 Peterbilt 375 starts with choosing the right parts, and a high-quality Rear Shock and Strut helps ensure a reliable and efficient vehicle. At Advance Auto Parts, we offer Rear Shock and Struts specifically for the 1993 Peterbilt 375, ensuring a perfect fit and lasting durability. Choosing to shop with Advance Auto Parts means you’re making a smart decision to prioritize both quality and reliability for your vehicle.

Affordable and Reliable Rear Shock and Struts for Every Budget

Finding a Rear Shock and Strut that combines quality with affordability is easy at Advance Auto Parts. With prices starting as low as $67.99 and an average price of $98.49, you can choose one that fits your budget while delivering the quality you expect. Our Rear Shock and Struts are competitively priced, ranging from $67.99 to $132.99, so you get value without compromising on strength or reliability.

Trusted Brands and Top-Rated Options

With 18 Rear Shock and Struts from 2 trusted brands in stock, Advance Auto Parts has you covered. Popular options include Magnum Shock Absorber, Magnum Shock Absorber, and Magnum Shock Absorber, starting at $99.99. Our selection includes highly regarded brands such as Monroe and Bulldog HD, and more, offering you top-notch reliability. For example, we have 11 Monroe Rear Shock and Struts starting at $81.99 with an average rating of 4 stars, 7 Bulldog HD options from $67.99 with a 0 stars rating.

Explore Related Parts for a Complete Solution

To further enhance your 1993 Peterbilt 375, don’t miss our related parts categories, including Front Shock and Struts. These additions will round out your repair or upgrade project and ensure your vehicle is ready for any adventure.

Rear Shock and Struts for Your 1993 Peterbilt 375

Monroe – Magnum Shock Absorber (Part No.65402)

Magnum Shock Absorber

from

$125.99
The Monroe® Magnum shock absorber for Class 6-8 Vehicles is the first gas-charged, large-bore shock specifically designed for air spring and taper leaf suspensions. Its nitrogen gas charge provides the fast response essential for today’s heavy truck suspe

Product Features:
  • Robust hydraulic lock-out Prevents over-extension of the suspension, top-out of the piston and averts damage to the seal assembly – when required
  • PTFE coated bearing Reduces friction during operation between the rod and rod guide, improving durability – on most applications
  • Tenneco shouldered bushings Shouldered bushing and bonded bushing with sleeve designs prevent (bushing walkout) for improved quality and durability – on most applications
  • Nitrogen gas-charged For improved ride and handling, helps maintain tire to road contact by reducing aeration – on most applications
  • Loop welding technique Resistance weld with additional 360-degree weld to provide up to 15,000 lbs. (6,804 kg) tensile strength for maximum durability – when required
  • 2-3/8 inch (60.3 mm) reserve tube More fluid for more consistent performance – on most applications
  • 1-3/4-inch (44.6 mm) bore Large bore than most shocks to provide more consistent control
  • .05-inch Pressure tube withstanding pressure of 9KPSI
  • 10-stage valving Reacts to wide range of driving conditions – on most applications
  • 10-stage valving: Reacts to wide range of driving conditions – on most applications
  • All weather fluid: Contains special modifiers to reduce frictions and ensure smooth rod reaction
  • Single-lip, low-friction oil seal
See More

Monroe – Magnum Shock Absorber (Part No.65495)

Magnum Shock Absorber

from

$132.99
The Monroe® Magnum shock absorber for Class 6-8 Vehicles is the first gas-charged, large-bore shock specifically designed for air spring and taper leaf suspensions. Its nitrogen gas charge provides the fast response essential for today’s heavy truck suspe

Product Features:
  • Robust hydraulic lock-out Prevents over-extension of the suspension, top-out of the piston and averts damage to the seal assembly – when required
  • PTFE coated bearing Reduces friction during operation between the rod and rod guide, improving durability – on most applications
  • Tenneco shouldered bushings Shouldered bushing and bonded bushing with sleeve designs prevent (bushing walkout) for improved quality and durability – on most applications
  • Nitrogen gas-charged For improved ride and handling, helps maintain tire to road contact by reducing aeration – on most applications
  • Loop welding technique Resistance weld with additional 360-degree weld to provide up to 15,000 lbs. (6,804 kg) tensile strength for maximum durability – when required
  • 2-3/8 inch (60.3 mm) reserve tube More fluid for more consistent performance – on most applications
  • 1-3/4-inch (44.6 mm) bore Large bore than most shocks to provide more consistent control
  • .05-inch Pressure tube withstanding pressure of 9KPSI
  • 10-stage valving Reacts to wide range of driving conditions – on most applications
  • 10-stage valving: Reacts to wide range of driving conditions – on most applications
  • All weather fluid: Contains special modifiers to reduce frictions and ensure smooth rod reaction
  • Single-lip, low-friction oil seal
See More

Monroe – Magnum Shock Absorber (Part No.65444)

Magnum Shock Absorber

from

$127.99
The Monroe® Magnum shock absorber for Class 6-8 Vehicles is the first gas-charged, large-bore shock specifically designed for air spring and taper leaf suspensions. Its nitrogen gas charge provides the fast response essential for today’s heavy truck suspe

Product Features:
  • Robust hydraulic lock-out Prevents over-extension of the suspension, top-out of the piston and averts damage to the seal assembly – when required
  • PTFE coated bearing Reduces friction during operation between the rod and rod guide, improving durability – on most applications
  • Tenneco shouldered bushings Shouldered bushing and bonded bushing with sleeve designs prevent (bushing walkout) for improved quality and durability – on most applications
  • Nitrogen gas-charged For improved ride and handling, helps maintain tire to road contact by reducing aeration – on most applications
  • Loop welding technique Resistance weld with additional 360-degree weld to provide up to 15,000 lbs. (6,804 kg) tensile strength for maximum durability – when required
  • 2-3/8 inch (60.3 mm) reserve tube More fluid for more consistent performance – on most applications
  • 1-3/4-inch (44.6 mm) bore Large bore than most shocks to provide more consistent control
  • .05-inch Pressure tube withstanding pressure of 9KPSI
  • 10-stage valving Reacts to wide range of driving conditions – on most applications
See More

Monroe – Magnum Shock Absorber (Part No.65401)

Magnum Shock Absorber

from

$115.99
The Monroe® Magnum shock absorber for Class 6-8 Vehicles is the first gas-charged, large-bore shock specifically designed for air spring and taper leaf suspensions. Its nitrogen gas charge provides the fast response essential for today’s heavy truck suspe

Product Features:
  • Robust hydraulic lock-out Prevents over-extension of the suspension, top-out of the piston and averts damage to the seal assembly – when required
  • PTFE coated bearing Reduces friction during operation between the rod and rod guide, improving durability – on most applications
  • Tenneco shouldered bushings Shouldered bushing and bonded bushing with sleeve designs prevent (bushing walkout) for improved quality and durability – on most applications
  • Nitrogen gas-charged For improved ride and handling, helps maintain tire to road contact by reducing aeration – on most applications
  • Loop welding technique Resistance weld with additional 360-degree weld to provide up to 15,000 lbs. (6,804 kg) tensile strength for maximum durability – when required
  • 2-3/8 inch (60.3 mm) reserve tube More fluid for more consistent performance – on most applications
  • 1-3/4-inch (44.6 mm) bore Large bore than most shocks to provide more consistent control
  • .05-inch Pressure tube withstanding pressure of 9KPSI
  • 10-stage valving Reacts to wide range of driving conditions – on most applications
  • 10-stage valving: Reacts to wide range of driving conditions – on most applications
  • All weather fluid: Contains special modifiers to reduce frictions and ensure smooth rod reaction
  • Single-lip, low-friction oil seal
See More

Monroe – Magnum Shock Absorber (Part No.65448)

Magnum Shock Absorber

from

$113.99
The Monroe® Magnum shock absorber for Class 6-8 Vehicles is the first gas-charged, large-bore shock specifically designed for air spring and taper leaf suspensions. Its nitrogen gas charge provides the fast response essential for today’s heavy truck suspe

Product Features:
  • Robust hydraulic lock-out Prevents over-extension of the suspension, top-out of the piston and averts damage to the seal assembly – when required
  • PTFE coated bearing Reduces friction during operation between the rod and rod guide, improving durability – on most applications
  • Tenneco shouldered bushings Shouldered bushing and bonded bushing with sleeve designs prevent (bushing walkout) for improved quality and durability – on most applications
  • Nitrogen gas-charged For improved ride and handling, helps maintain tire to road contact by reducing aeration – on most applications
  • Loop welding technique Resistance weld with additional 360-degree weld to provide up to 15,000 lbs. (6,804 kg) tensile strength for maximum durability – when required
  • 2-3/8 inch (60.3 mm) reserve tube More fluid for more consistent performance – on most applications
  • 1-3/4-inch (44.6 mm) bore Large bore than most shocks to provide more consistent control
  • .05-inch Pressure tube withstanding pressure of 9KPSI
  • 10-stage valving Reacts to wide range of driving conditions – on most applications
  • 10-stage valving: Reacts to wide range of driving conditions – on most applications
  • All weather fluid: Contains special modifiers to reduce frictions and ensure smooth rod reaction
  • Single-lip, low-friction oil seal
See More

Monroe – Magnum Shock Absorber (Part No.65400)

Magnum Shock Absorber

from

$112.99
The Monroe® Magnum shock absorber for Class 6-8 Vehicles is the first gas-charged, large-bore shock specifically designed for air spring and taper leaf suspensions. Its nitrogen gas charge provides the fast response essential for today’s heavy truck suspe

Product Features:
  • Robust hydraulic lock-out Prevents over-extension of the suspension, top-out of the piston and averts damage to the seal assembly – when required
  • PTFE coated bearing Reduces friction during operation between the rod and rod guide, improving durability – on most applications
  • Tenneco shouldered bushings Shouldered bushing and bonded bushing with sleeve designs prevent (bushing walkout) for improved quality and durability – on most applications
  • Nitrogen gas-charged For improved ride and handling, helps maintain tire to road contact by reducing aeration – on most applications
  • Loop welding technique Resistance weld with additional 360-degree weld to provide up to 15,000 lbs. (6,804 kg) tensile strength for maximum durability – when required
  • 2-3/8 inch (60.3 mm) reserve tube More fluid for more consistent performance – on most applications
  • 1-3/4-inch (44.6 mm) bore Large bore than most shocks to provide more consistent control
  • .05-inch Pressure tube withstanding pressure of 9KPSI
  • 10-stage valving Reacts to wide range of driving conditions – on most applications
See More

Monroe – Magnum Shock Absorber (Part No.65534)

Magnum Shock Absorber

from

$99.99
The Monroe® Magnum shock absorber for Class 6-8 Vehicles is the first gas-charged, large-bore shock specifically designed for air spring and taper leaf suspensions. Its nitrogen gas charge provides the fast response essential for today’s heavy truck suspe

Product Features:
  • Robust hydraulic lock-out Prevents over-extension of the suspension, top-out of the piston and averts damage to the seal assembly – when required
  • PTFE coated bearing Reduces friction during operation between the rod and rod guide, improving durability – on most applications
  • Tenneco shouldered bushings Shouldered bushing and bonded bushing with sleeve designs prevent (bushing walkout) for improved quality and durability – on most applications
  • Nitrogen gas-charged For improved ride and handling, helps maintain tire to road contact by reducing aeration – on most applications
  • Loop welding technique Resistance weld with additional 360-degree weld to provide up to 15,000 lbs. (6,804 kg) tensile strength for maximum durability – when required
  • 2-3/8 inch (60.3 mm) reserve tube More fluid for more consistent performance – on most applications
  • 1-3/4-inch (44.6 mm) bore Large bore than most shocks to provide more consistent control
  • .05-inch Pressure tube withstanding pressure of 9KPSI
  • 10-stage valving Reacts to wide range of driving conditions – on most applications
  • 10-stage valving: Reacts to wide range of driving conditions – on most applications
  • All weather fluid: Contains special modifiers to reduce frictions and ensure smooth rod reaction
  • Single-lip, low-friction oil seal
See More

Monroe – GAS-MAGNUM 65 Shock Absorber (Part No.65474)

GAS-MAGNUM 65 Shock Absorber

from

$99.99
The Monroe Gas-Magnum 65 shock absorber is the first gas-charged, large-bore shock specifically designed for air spring and taper leaf suspensions. Its nitrogen gas charge provides the fast response essential for today’s heavy truck suspension systems. Its extra-large piston bore is engineered to handle the demands of high mileage and severe use. When combined, the gas charge and large-bore provide the consistent control necessary for demanding truck suspensions.

Product Features:
  • Nitrogen Gas Charged: For improved ride and handling, helps maintain tire to road contact by reducing aeration.
  • Resistance and arc-welded mounts, provides 15,000 lbs. (6,804 kg) of tensile strength for maximum durability.
  • Single-lip, low-friction oil seal.
  • 2-3/8″ (60.3 mm) reserve tube.
  • Large 1-3/4″ (44.5 mm) piston bore.
  • Hardened 23/32″ (18 mm) diameter chrome piston rod.
  • Patented unique hydraulic rebound lockout (when required).
See More

Bulldog HD – Heavy-Duty Shock Absorber – 1994-1997 Ford F700 (Part No.HD1215-0043)

Heavy-Duty Shock Absorber - 1994-1997 Ford F700

from

$94.99
Bulldog HD commercial Heavy Duty shock absorbers are designed with the best materials and innovative design techniques for lasting quality and performance! Best Technology. Best Performance. Ultra Premium HD Shocks.

Product Features:
  • Robotic 360 Degree Welds; Highest Weld Strength in the Industry
  • Propriety Value Design for long lasting compression and rebound performance
  • Brushing rubber formulation with lowest levels of filler
  • OE Enos Synthetic to perform from -40 Deg. F to 340 Deg. F
  • Double lip seal design to reduce excessive misting and extend damping life cycle
See More

Bulldog HD – Heavy-Duty Shock Absorber – 2002-2002 Freightliner XC (Part No.HD1215-0062)

Heavy-Duty Shock Absorber - 2002-2002 Freightliner XC

from

$90.99
Bulldog HD commercial Heavy Duty shock absorbers are designed with the best materials and innovative design techniques for lasting quality and performance! Best Technology. Best Performance. Ultra Premium HD Shocks.

Product Features:
  • Robotic 360 Degree Welds; Highest Weld Strength in the Industry
  • Propriety Value Design for long lasting compression and rebound performance
  • Brushing rubber formulation with lowest levels of filler
  • OE Enos Synthetic to perform from -40 Deg. F to 340 Deg. F
  • Double lip seal design to reduce excessive misting and extend damping life cycle
See More

Bulldog HD – Heavy-Duty Shock Absorber – 2013-2014 Kenworth T680 (Part No.HD1215-0034)

Heavy-Duty Shock Absorber - 2013-2014 Kenworth T680

from

$88.99
Bulldog HD commercial Heavy Duty shock absorbers are designed with the best materials and innovative design techniques for lasting quality and performance! Best Technology. Best Performance. Ultra Premium HD Shocks.

Product Features:
  • Robotic 360 Degree Welds; Highest Weld Strength in the Industry
  • Propriety Value Design for long lasting compression and rebound performance
  • Brushing rubber formulation with lowest levels of filler
  • OE Enos Synthetic to perform from -40 Deg. F to 340 Deg. F
  • Double lip seal design to reduce excessive misting and extend damping life cycle
See More

Bulldog HD – Heavy-Duty Shock Absorber – 1995-2002 Peterbilt 330 (Part No.HD1215-0037)

Heavy-Duty Shock Absorber - 1995-2002 Peterbilt 330

from

$86.99
Bulldog HD commercial Heavy Duty shock absorbers are designed with the best materials and innovative design techniques for lasting quality and performance! Best Technology. Best Performance. Ultra Premium HD Shocks.

Product Features:
  • Robotic 360 Degree Welds; Highest Weld Strength in the Industry
  • Propriety Value Design for long lasting compression and rebound performance
  • Brushing rubber formulation with lowest levels of filler
  • OE Enos Synthetic to perform from -40 Deg. F to 340 Deg. F
  • Double lip seal design to reduce excessive misting and extend damping life cycle
See More

Bulldog HD – Heavy-Duty Shock Absorber – 2005-2010 Peterbilt 335 (Part No.HD1215-0082)

Heavy-Duty Shock Absorber - 2005-2010 Peterbilt 335

from

$83.99
Bulldog HD commercial Heavy Duty shock absorbers are designed with the best materials and innovative design techniques for lasting quality and performance! Best Technology. Best Performance. Ultra Premium HD Shocks.

Product Features:
  • Robotic 360 Degree Welds; Highest Weld Strength in the Industry
  • Propriety Value Design for long lasting compression and rebound performance
  • Brushing rubber formulation with lowest levels of filler
  • OE Enos Synthetic to perform from -40 Deg. F to 340 Deg. F
  • Double lip seal design to reduce excessive misting and extend damping life cycle
See More

Monroe – GAS-MAGNUM 60 Shock Absorber (Part No.66429)

GAS-MAGNUM 60 Shock Absorber

from

$82.99
The Monroe Gas-Magnum 60 shock absorber is gas-charged for quicker response and a stable, more comfortable ride. Replacing worn-out units with hard-working Gas-Magnum 60 shocks can help reduce excessive vibration. The result can be better tire life, less downtime and a lower cost per mile.

Product Features:
  • Multi-lip fluid seal designed for smooth performance, long life and reduced friction
  • Nitrogen Gas Charged: For improved ride and handling, helps maintain tire to road contact by reducing aeration.
  • 2″ or 2-3/8″ (50.8 mm or 60.3 mm) reserve tube (where required)
  • 1-3/8 inch (34.9 mm) bore (On most applications)
  • 5/8-inch (15.9 mm) diameter piston rod (On most applications)
  • Resistance and arc-welded mounts, provide 9,500 lbs. (4,309 kg) of tensile strength for maximum durability (on most applications)
  • Patented unique hydraulic rebound lockout (when required)
  • Special “Self-lubricating” fluid seal designed to retain gas without excessive wear or friction.
See More

Bulldog HD – Heavy-Duty Shock Absorber – 1986-2008 Peterbilt 357 (Part No.HD1215-0033)

Heavy-Duty Shock Absorber - 1986-2008 Peterbilt 357

from

$81.99
Bulldog HD commercial Heavy Duty shock absorbers are designed with the best materials and innovative design techniques for lasting quality and performance! Best Technology. Best Performance. Ultra Premium HD Shocks.

Product Features:
  • Robotic 360 Degree Welds; Highest Weld Strength in the Industry
  • Propriety Value Design for long lasting compression and rebound performance
  • Brushing rubber formulation with lowest levels of filler
  • OE Enos Synthetic to perform from -40 Deg. F to 340 Deg. F
  • Double lip seal design to reduce excessive misting and extend damping life cycle
See More

Monroe – Magnum Shock Absorber (Part No.66428)

Magnum Shock Absorber

from

$81.99
The Monroe® Magnum shock absorber for class 3-6 Vehicles is gas-charged for quicker response and a stable, more comfortable ride. Replacing worn-out units with hard-working Magnum shocks can help reduce excessive vibration. The result can be better tire l

Product Features:
  • Robust hydraulic lock-out Prevents over-extension of the suspension, top-out of the piston and averts damage to the seal assembly – on most applications
  • PTFE coated bearing Reduces friction during operation between the rod and rod guide, improving durability – on most applications
  • Tenneco shouldered bushings Shouldered bushing and bonded bushing with sleeve designs prevent (bushing walkout) for improved quality and durability – on most applications
  • Nitrogen gas-charged For improved ride and handling, helps maintain tire to road contact by reducing aeration – on most applications
  • Loop welding technique Resistance weld with additional 360-degree weld provide up to 13,100 lbs. (6,395 kg) tensile strength for maximum durability – when required
  • 2-inch (50.8 mm) or 2-1/4-inch (57.2 mm) reserve tube More fluid for more consistent performance – when required
  • 1-3/8-inch (35 mm) bore Larger bore than most shocks to provide more efficient and consistent control – on most applications
  • .05-inch Pressure tube withstanding pressure of 9KPSI
  • 10-stage valving Reacts to wide range of driving conditions – on most applications
  • 10-stage valving: Reacts to wide range of driving conditions – on most applications
  • All weather fluid: Contains special modifiers to reduce frictions and ensure smooth rod reaction
See More

Monroe – Magnum Shock Absorber (Part No.66436)

Magnum Shock Absorber

from

$81.99
The Monroe® Magnum shock absorber for class 3-6 Vehicles is gas-charged for quicker response and a stable, more comfortable ride. Replacing worn-out units with hard-working Magnum shocks can help reduce excessive vibration. The result can be better tire l

Product Features:
  • Robust hydraulic lock-out Prevents over-extension of the suspension, top-out of the piston and averts damage to the seal assembly – on most applications
  • PTFE coated bearing Reduces friction during operation between the rod and rod guide, improving durability – on most applications
  • Tenneco shouldered bushings Shouldered bushing and bonded bushing with sleeve designs prevent (bushing walkout) for improved quality and durability – on most applications
  • Nitrogen gas-charged For improved ride and handling, helps maintain tire to road contact by reducing aeration – on most applications
  • Loop welding technique Resistance weld with additional 360-degree weld provide up to 13,100 lbs. (6,395 kg) tensile strength for maximum durability – when required
  • 2-inch (50.8 mm) or 2-1/4-inch (57.2 mm) reserve tube More fluid for more consistent performance – when required
  • 1-3/8-inch (35 mm) bore Larger bore than most shocks to provide more efficient and consistent control – on most applications
  • .05-inch Pressure tube withstanding pressure of 9KPSI
  • 10-stage valving Reacts to wide range of driving conditions – on most applications
  • 10-stage valving: Reacts to wide range of driving conditions – on most applications
  • All weather fluid: Contains special modifiers to reduce frictions and ensure smooth rod reaction
See More

Bulldog HD – Heavy-Duty Shock Absorber – 1995-2005 Peterbilt 300 (Part No.HD1214-0612)

Heavy-Duty Shock Absorber - 1995-2005 Peterbilt 300

from

$67.99
Bulldog HD commercial Heavy Duty shock absorbers are designed with the best materials and innovative design techniques for lasting quality and performance! Best Technology. Best Performance. Ultra Premium HD Shocks.

Product Features:
  • Robotic 360 Degree Welds; Highest Weld Strength in the Industry
  • Propriety Value Design for long lasting compression and rebound performance
  • Brushing rubber formulation with lowest levels of filler
  • OE Enos Synthetic to perform from -40 Deg. F to 340 Deg. F
  • Double lip seal design to reduce excessive misting and extend damping life cycle
See More

FAQs for 1993 Peterbilt 375 Rear Shock and Struts

Which Rear Shock and Struts are the top sellers for the 1993 Peterbilt 375?

Out of 18 Rear Shock and Struts that fit 1993 Peterbilt 375s, the following parts are the top sellers:
Magnum Shock Absorber
from $125.99
This product is not rated
Magnum Shock Absorber
Rear Shock and Struts
Magnum Shock Absorber
from $99.99
This product is not rated
Magnum Shock Absorber
Rear Shock and Struts
Magnum Shock Absorber
from $113.99
This product is not rated
Magnum Shock Absorber
Rear Shock and Struts

How can I make sure that a part will be compatible with my 1993 Peterbilt 375?

Our Peterbilt 375 aftermarket and OEM parts are designed specifically for the 1993 model. You can always find your specific fitment and compatibility for your 1993 Peterbilt on an individual product page.

What is the price range for 1993 Peterbilt 375 Rear Shock and Struts?

The range of prices of Rear Shock and Struts for the 1993 Peterbilt 375 goes from $67.99 up to $132.99 for the most premium parts.

What is the average price of a 1993 Peterbilt 375 Rear Shock and Strut?

1993 Peterbilt 375 Rear Shock and Struts average $98.49 for our selection of OEM and aftermarket parts. Keep in mind the variety of brands we offer, such as Monroe Bulldog HD, and more, so you are likely to find a wide range of prices across a variety of brands and products.

Does Advance Auto Parts sell Rear Shock and Struts for other Peterbilt 375 model years?

Yes, we currently stock Rear Shock and Struts for 9 model years of Peterbilt 375s, from 1987 to 1996. Model years 1996, 1995, 1994, 1992, 1991, 1990, 1989, 1988, and 1987 are the most popular for Rear Shock and Strut purchases.

Can I get help with 1993 Peterbilt 375 Rear Shock and Strut orders?

Contact our customer support team, by chat or phone, through the help desk page, where you can find instant answers about Peterbilt Rear Shock and Struts and more.

What is your return policy for Peterbilt 375 Rear Shock and Struts?

Advance Auto Parts keeps returns simple. For new Peterbilt 375 Rear Shock and Struts and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.