Duplex Parts

Search 35 Duplex Parts

Shopping for Duplex replacement parts? Looking to improve your Duplex’s performance? Browse our online Duplex parts catalog to find Duplex performance products to increase your vehicle’s efficiency, or aftermarket Duplex parts to get you up and running again.

At Advance Auto, we carry a great selection of new and used Duplex components where you can buy manufacture-built OEM or aftermarket part. Advance Auto sells Duplex auto parts online and in local stores all over the country. We carry close to 35 Duplex parts and accessories for the last 10 years and 12 different models of Duplex cars – so you’re sure to find what you need.

Advance Auto is a price leader in new and used Duplex online auto parts. Whether you want to order online, or visit a local store for Duplex parts, Advance Auto can help you keep your Duplex running.

Popular Duplex Parts

ZEREX – G05® Full Strength Concentrate Antifreeze / Coolant, 1 Gallon (Part No.ZXG051)

G05® Full Strength Concentrate Antifreeze / Coolant, 1 Gallon

from

$22.99
ZEREX G05® is the automaker approved original chemistry used in newer Ford®, Chrysler® and Mercedes-Benz® automotive and diesel engines. Its Hybrid Organic Acid Technology (HOAT) chemistry combines the best of conventional and organic acid-based chemistry to provide the ultimate protection against rust and corrosion. ZEREX G05 antifreeze/coolant uses the highest quality virgin ethylene glycol for freeze and boil over protection and a hybrid organic acid corrosion inhibitor package to protect your engines from liner pitting and corrosion.

Product Features:
  • Automaker approved technology. Provides protection for 5 years / 150,000 miles in light duty applications and 3 years / 300,000 miles in heavy duty applications
  • Formulated for long life performance
  • Low-silicate, low-pH and phosphate-free formula
  • Helps protect all cooling system metals, including aluminum
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ZEREX – G05 50/50 Ready-to-Use Antifreeze / Coolant, 1 Gallon (Part No.ZXG05RU1)

G05 50/50 Ready-to-Use Antifreeze / Coolant, 1 Gallon

from

$19.99
ZEREX G05® is the automaker approved original chemistry used in newer Ford®, Chrysler® and Mercedes-Benz® automotive and diesel engines. Its Hybrid Organic Acid Technology (HOAT) chemistry combines the best of conventional and organic acid-based chemistry to provide the ultimate protection against rust and corrosion. ZEREX G05® antifreeze/coolant uses the highest quality virgin ethylene glycol for freeze and boil over protection and a hybrid organic acid corrosion inhibitor package to protect your engines from liner pitting and corrosion.

Product Features:
  • Automaker approved technology. Provides protection for 5 years / 150,000 miles in light duty applications and 3 years / 300,000 miles in heavy duty applications
  • Formulated for long life performance
  • Low-silicate, low-pH and phosphate-free formula
  • Helps protect all cooling system metals, including aluminum
See More

Prestone – Command Antifreeze and Coolant: 50/50 Ready To Use, Nitrited ELC Red N-OAT, 1 Gallon (Part No.AFC11100)

Command Antifreeze and Coolant: 50/50 Ready To Use, Nitrited ELC Red N-OAT, 1 Gallon

from

$23.99
Prestone® Command® Nitrited (NOAT) Extended Life (ELC) antifreeze+coolant (ready to use) is designed to work with all Class 6-8 vehicles. When compared to ESI & low silicate conventional, it is designed to help lower maintenance costs and improve water pump life. It is compatible with any Nitrited OAT engine. This formula is Nitrited and provides excellent protection for aluminum and all other engine metals. Command NOAT ELC protects against liner pitting and corrosion protections.

Product Features:
  • Nitrited Extended Life Coolant – NOAT ELC – Red formula. Compatible with any Nitrited OAT
  • Helps lower maintenance costs and improve water pump life when compared to ESI coolants
  • Meets OEM Performance requirements: ASTM D6210, D3306, D4985; TMC RP329A, RP338A, RP364; Cummings CES 14439; Cat EC-1 and many OEM requirements
  • Ready to Use formula (prediluted to a 50% Eg & 50% distilled water mix). Perfect for small volume top-off or complete drain and refill of the cooling system
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DieHard HD Battery – Farm and Truck Battery: 31S Group Size, 950 CCA, 1140 CA, 175 Minute Reserve Capacity, Heavy Duty (Part No.31S30)

Farm and Truck Battery: 31S Group Size, 950 CCA, 1140 CA, 175 Minute Reserve Capacity, Heavy Duty

from

$159.99
These batteries do the job for commercial trucks, heavy duty and agricultural applications.

Product Features:
  • Up to 2x the life of a standard flooded battery.
  • Patented stamped grid technology in both positive and negative grids, resulting in superior performance and longer life in high heat and demanding environments.
  • Superior vibration resistance
  • Certified NONSPILLABLE for safety and flexibility in mounting location.
  • The heavy duty internal connectors ensure a solid connection between plates and top lead, enabling better internal electric flow
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DieHard HD Battery – Battery: 31T Group Size, 1000 CCA, 1190 CA, 185 Minute Reserve Capacity, Heavy Duty (Part No.31HDS30)

Battery: 31T Group Size, 1000 CCA, 1190 CA, 185 Minute Reserve Capacity, Heavy Duty

from

$195.99
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 – Battery: 31T Group Size, 900 CCA, 1125 CA, 155 Minute Reserve Capacity, Deep-Cycle (Part No.D31T-1125)

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

from

$401.99
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. Don’t want to bother with installing your new OPTIMA battery? Stop by your nearest Advance Auto Parts store and take advantage of our FREE battery testing and installation on most vehicles and at most locations. We offer free battery and electrical system testing and free recycling of your old automotive battery. Advance Auto Parts offers helpful advice about a variety of products, including car batteries. Be sure to check out the following:

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

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

from

$268.99
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
See More

Peak – 10X Antifreeze + Coolant Concentrate for All Vehicles – 1 Gallon (Part No.PKP0B3)

10X Antifreeze + Coolant Concentrate for All Vehicles - 1 Gallon

from

$19.79
PEAK® Antifreeze + Coolant Concentrate is specially engineered to deliver guaranteed superior lifetime protection. Its advanced universal formula contains a proprietary blend of 10X the scale-fighting inhibitors coupled with robust organic additives to fight against the damaging effects of scale deposits and corrosion. PEAK Antifreeze + Coolant is free of 2-EHA, silicate, nitrite, borate, and amines, ensuring maximum cooling system performance for 10+ years/300,000+ miles. It is compatible for use with any color or type of antifreeze/coolant in the system.

Product Features:
  • Specially formulated to deliver Superior Lifetime Protection against damaging scale and corrosion
  • Contains 10X the scale-fighting inhibitors to ensure maximum cooling system performance
  • Provides more than 2X the warranty coverage for 10+ years/300,000+ miles of service
  • Universal formula is compatible with any color or type of antifreeze/coolant
  • Meets the performance requirements of ASTM D3306 and D4985
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Peak – Final Charge Heavy Duty Antifreeze and Coolant: 50/50 Ready To Use, Corrosion Protection, 1 Gallon (Part No.FXAB53)

Final Charge Heavy Duty Antifreeze and Coolant: 50/50 Ready To Use, Corrosion Protection, 1 Gallon

from

$21.99
PEAK FINAL CHARGE Global Full Strength Extended Life Coolant/Antifreeze is an Organic Acid Technology (OAT), globally formulated, ethylene glycol-based coolant, which uses organic acid inhibitors (non-2-EH) to provide guaranteed protection for all cooling system metals. With proper maintenance, (1) FINAL CHARGE Global Extended Life Coolant/Antifreeze delivers guaranteed cooling system protection for ONE MILLION MILES of on-road use (8 years or 20,000 hours of off-road use) without the use of Supplemental Coolant Additives (SCAs). FINAL CHARGE Global Extended Life Coolant/Antifreeze is nitrite-free, phosphate-free, silicate-free, and borate-free. (1)Proper maintenance requires a complete cooling system flush and fill – and subsequent topping off, as needed – with FINAL CHARGE Global Extended Life 50/50 Pre-diluted Coolant/Antifreeze or Final Charge Global Extended Life Coolant/Antifreeze and water. For guaranteed protection, no other products or product supplements may be used.

Product Features:
  • Works in ALL heavy duty diesel, gasoline and natural gas engine cooling systems
  • Guaranteed protection for ONE MILLION MILES of on-road use (8 years or 20,000 hours of off-road use) (Proper maintenance requires a complete cooling system flush and fill – and subsequent topping off, as needed)
  • Eliminates the need for SCAs and chemically charged ?lters & Excellent heat transfer for high temperature applications such as engines with EGR and SCR systems
  • Outstanding protection against corrosion and cavitation. Non-abrasive formula can improve water pump seal life.
  • Eliminates drop-out, gel and reduces scale.
  • Can be mixed with other coolants (to maintain corrosion protection contamination levels should be kept below 25%). Provides exceptional long term elastomer compatibility
  • Testing Requirements: For proper freeze and boil over protection, use a traditional refractometer or hydrometer to measure the percentage of ethylene glycol by volume.
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Prestone – Command Antifreeze and Coolant: Concentrate, Nitrited ELC Red N-OAT, 1 Gallon (Part No.AFC11000)

Command Antifreeze and Coolant: Concentrate, Nitrited ELC Red N-OAT, 1 Gallon

from

$25.99
Prestone® Command® Nitrited (NOAT) Extended Life (ELC) antifreeze+coolant (Concentrate) is designed to work with all Class 6-8 vehicles. When compared to ESI & low silicate conventional, it is designed to help lower maintenance costs and improve water pump life. It is compatible with any Nitrited OAT engine. This formula is Nitrited and provides excellent protection for aluminum and all other engine metals. Command NOAT ELC protects against liner pitting and corrosion protections.

Product Features:
  • Nitrited Extended Life Coolant – NOAT ELC – Red formula. Compatible with any Nitrited OAT
  • Helps lower maintenance costs and improve water pump life when compared to ESI coolants
  • Meets OEM Performance requirements: ASTM D6210, D3306, D4985; TMC RP329A, RP338A, RP364; Cummings CES 14439; Cat EC-1 and many OEM requirements
  • Concentrated formula. Must mix with high quality (distilled/deionized) water to the desired ratio. Can be used for top-off, complete drain and refill or flush and refill of the cooling system.
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Carquest Premium – ABS Wheel Speed Sensor Connector (Part No.PTA1007)

ABS Wheel Speed Sensor Connector

from

$10.49
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
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Carquest Premium – Heavy Duty Thermostat: With Seal, 190 Degrees (Part No.14539)

Heavy Duty Thermostat: With Seal, 190 Degrees

from

$38.49
Carquest Premium Thermostats are manufactured with OEM quality materials and safety standards by an OE Supplier. This thermostat will meet and exceed the expectations of the OE thermostat to insure the best product for your cooling system. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant. Offset design, air relief valve, and OEM style seals included where applicable.

Product Features:
  • High grade stainless steel and copper construction
  • Meets or exceeds OEM standards
  • Consistent and precise response to cooling system needs
  • Original equipment design for worry-free direct fit replacement
  • 100% tested and calibrated
See More

DieHard HD Battery – Battery: 31T Group Size, 750 CCA, 935 CA, 180 Minute Reserve Capacity, Heavy Duty (Part No.31XS-30)

Battery: 31T Group Size, 750 CCA, 935 CA, 180 Minute Reserve Capacity, Heavy Duty

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
See More

Carquest Premium – Heavy Duty Thermostat: With Seal, 190 Degrees (Part No.15229)

Heavy Duty Thermostat: With Seal, 190 Degrees

from

$51.99
Carquest Premium Thermostats are manufactured with OEM quality materials and safety standards by an OE Supplier. This thermostat will meet and exceed the expectations of the OE thermostat to insure the best product for your cooling system. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant. Offset design, air relief valve, and OEM style seals included where applicable.

Product Features:
  • High grade stainless steel and copper construction
  • Meets or exceeds OEM standards
  • Consistent and precise response to cooling system needs
  • Original equipment design for worry-free direct fit replacement
  • 100% tested and calibrated
See More

Carquest Premium – Heavy Duty Thermostat: With Seal, 180 Degrees (Part No.15228)

Heavy Duty Thermostat: With Seal, 180 Degrees

from

$50.99
Carquest Premium Thermostats are manufactured with OEM quality materials and safety standards by an OE Supplier. This thermostat will meet and exceed the expectations of the OE thermostat to insure the best product for your cooling system. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant. Offset design, air relief valve, and OEM style seals included where applicable.

Product Features:
  • High grade stainless steel and copper construction
  • Meets or exceeds OEM standards
  • Consistent and precise response to cooling system needs
  • Original equipment design for worry-free direct fit replacement
  • 100% tested and calibrated
See More

Carquest Premium – Heavy Duty Thermostat: With Seal, 190 Degrees (Part No.14239)

Heavy Duty Thermostat: With Seal, 190 Degrees

from

$40.99
Carquest Premium Thermostats are manufactured with OEM quality materials and safety standards by an OE Supplier. This thermostat will meet and exceed the expectations of the OE thermostat to insure the best product for your cooling system. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant. Offset design, air relief valve, and OEM style seals included where applicable.

Product Features:
  • High grade stainless steel and copper construction
  • Meets or exceeds OEM standards
  • Consistent and precise response to cooling system needs
  • Original equipment design for worry-free direct fit replacement
  • 100% tested and calibrated
See More

Carquest Premium – Heavy Duty Thermostat: With Seal, 160 Degrees (Part No.14536)

Heavy Duty Thermostat: With Seal, 160 Degrees

from

$35.99
Carquest Premium Thermostats are manufactured with OEM quality materials and safety standards by an OE Supplier. This thermostat will meet and exceed the expectations of the OE thermostat to insure the best product for your cooling system. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant. Offset design, air relief valve, and OEM style seals included where applicable.

Product Features:
  • High grade stainless steel and copper construction
  • Meets or exceeds OEM standards
  • Consistent and precise response to cooling system needs
  • Original equipment design for worry-free direct fit replacement
  • 100% tested and calibrated
See More

Carquest Premium – Heavy Duty Thermostat: With Seal, 170 Degrees (Part No.14537)

Heavy Duty Thermostat: With Seal, 170 Degrees

from

$50.99
Carquest Premium Thermostats are manufactured with OEM quality materials and safety standards by an OE Supplier. This thermostat will meet and exceed the expectations of the OE thermostat to insure the best product for your cooling system. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant. Offset design, air relief valve, and OEM style seals included where applicable.

Product Features:
  • High grade stainless steel and copper construction
  • Meets or exceeds OEM standards
  • Consistent and precise response to cooling system needs
  • Original equipment design for worry-free direct fit replacement
  • 100% tested and calibrated
See More

Carquest Premium – Heavy Duty Thermostat: With Seal, 180 Degrees (Part No.14538)

Heavy Duty Thermostat: With Seal, 180 Degrees

from

$37.49
Carquest Premium Thermostats are manufactured with OEM quality materials and safety standards by an OE Supplier. This thermostat will meet and exceed the expectations of the OE thermostat to insure the best product for your cooling system. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant. Offset design, air relief valve, and OEM style seals included where applicable.

Product Features:
  • High grade stainless steel and copper construction
  • Meets or exceeds OEM standards
  • Consistent and precise response to cooling system needs
  • Original equipment design for worry-free direct fit replacement
  • 100% tested and calibrated
See More

Carquest Premium – Heavy Duty Thermostat: With Seal, 180 Degrees (Part No.15218)

Heavy Duty Thermostat: With Seal, 180 Degrees

from

$22.99
Carquest Premium Thermostats are manufactured with OEM quality materials and safety standards by an OE Supplier. This thermostat will meet and exceed the expectations of the OE thermostat to insure the best product for your cooling system. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant. Offset design, air relief valve, and OEM style seals included where applicable.

Product Features:
  • High grade stainless steel and copper construction
  • Meets or exceeds OEM standards
  • Consistent and precise response to cooling system needs
  • Original equipment design for worry-free direct fit replacement
  • 100% tested and calibrated
See More

Delphi – Fuel Injector (Part No.EX631756)

Fuel Injector

from

$476.99
100 years of OE experience, supplier to the world’s top automakers, OE Heritage and knowledge built into every aftermarket part.

Product Features:
  • 100% O-ring replacement
  • All Delphi injectors are tested utilizing OE methodologies
  • Delphi injectors are produced in a Delphi ISO 9001:2008 certified facility
  • No internal seal rings equals minimized leakage
  • Recessed fuel exit minimizing possible plugging
  • Reduced spray variation, accurate fuel spray pattern mean better emissions and cold start capabilities
  • Thermally isolates fuel from engine by drawing manifold heat away from the fuel rail eliminating engine hesitation due to vapor lock
See More

Delphi – Fuel Injector (Part No.EX631766)

Fuel Injector

from

$439.99
100 years of OE experience, supplier to the world’s top automakers, OE Heritage and knowledge built into every aftermarket part.

Product Features:
  • 100% O-ring replacement
  • All Delphi injectors are tested utilizing OE methodologies
  • Delphi injectors are produced in a Delphi ISO 9001:2008 certified facility
  • No internal seal rings equals minimized leakage
  • Recessed fuel exit minimizing possible plugging
  • Reduced spray variation, accurate fuel spray pattern mean better emissions and cold start capabilities
  • Thermally isolates fuel from engine by drawing manifold heat away from the fuel rail eliminating engine hesitation due to vapor lock
See More

Delphi – Fuel Injector (Part No.EX631767)

Fuel Injector

from

$439.99
100 years of OE experience, supplier to the world’s top automakers, OE Heritage and knowledge built into every aftermarket part.

Product Features:
  • 100% O-ring replacement
  • All Delphi injectors are tested utilizing OE methodologies
  • Delphi injectors are produced in a Delphi ISO 9001:2008 certified facility
  • No internal seal rings equals minimized leakage
  • Recessed fuel exit minimizing possible plugging
  • Reduced spray variation, accurate fuel spray pattern mean better emissions and cold start capabilities
  • Thermally isolates fuel from engine by drawing manifold heat away from the fuel rail eliminating engine hesitation due to vapor lock
See More

Delphi – Fuel Injector (Part No.EX631763)

Fuel Injector

from

$439.99
100 years of OE experience, supplier to the world’s top automakers, OE Heritage and knowledge built into every aftermarket part.

Product Features:
  • 100% O-ring replacement
  • All Delphi injectors are tested utilizing OE methodologies
  • Delphi injectors are produced in a Delphi ISO 9001:2008 certified facility
  • No internal seal rings equals minimized leakage
  • Recessed fuel exit minimizing possible plugging
  • Reduced spray variation, accurate fuel spray pattern mean better emissions and cold start capabilities
  • Thermally isolates fuel from engine by drawing manifold heat away from the fuel rail eliminating engine hesitation due to vapor lock
See More

Delphi – Fuel Injector (Part No.EX637557)

Fuel Injector

from

$435.99
100 years of OE experience, supplier to the world’s top automakers, OE Heritage and knowledge built into every aftermarket part.

Product Features:
  • 100% O-ring replacement
  • All Delphi injectors are tested utilizing OE methodologies
  • Delphi injectors are produced in a Delphi ISO 9001:2008 certified facility
  • No internal seal rings equals minimized leakage
  • Recessed fuel exit minimizing possible plugging
  • Reduced spray variation, accurate fuel spray pattern mean better emissions and cold start capabilities
  • Thermally isolates fuel from engine by drawing manifold heat away from the fuel rail eliminating engine hesitation due to vapor lock
See More