2020 GMC Sierra 3500 HD Engine Parts
Find Your Specific 2020 GMC Sierra 3500 HD Engine Parts
Below you will find various in-demand GMC Engine Parts, components and accessories for your 2020 Sierra 3500 HD. Advance Auto Parts has popular Sierra 3500 HD parts like Valve Cover and Cylinder Heads, Camshafts, Engine Timing Parts and more. You’ll also find aftermarket and OEM Engine Parts for other Sierra 3500 HD model years including
2014,
2015,
2016,
2017,
2018,
2019,
2021,
2022,
2023 and more. Select a category of 2020 GMC Sierra 3500 HD Engine Parts below and start saving instantly.
Popular 2020 GMC Sierra 3500 HD Engine Parts Categories
Essential Engine Parts for 2020 GMC Sierra 3500 HDs
Carquest Premium – Engine Oil Level Sensor (Part No.SBA3659)
from
$32.99
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.
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Carquest Premium – Manifold Absolute Pressure Sensor (Part No.WTA1591)
from
$36.99
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.
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ACDelco – Crank Seal Cover Gas (Part No.A2161579544ACD)
from
$12.11
Crank Seal Cover Gas
Mahle – Camshaft Retainer (Part No.A4355425751MAH)
from
$35.08
Camshaft Retainer
Dorman – Camshaft Position Sensor (Part No.917-744)
from
$38.99
This engine camshaft position sensor is designed to match the fit and function of an original sensor to help ensure the engine control unit receives proper inputs when an original sensor has failed from heat or internal component damage.
Product Features:
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Product Features:
- Direct replacement – this engine camshaft position sensor is designed to match the fit and function of an original sensor on specified vehicles.
- Ideal solution – engineered to help ensure the engine control unit receives proper inputs when an original sensor has failed from heat or internal component damage.
- Durable construction – designed and manufactured to strict specifications for reliable performance
- Trustworthy quality – backed by a team of product experts in the United States and more than a century of automotive experience
ACDelco – GM Original Equipment Crankshaft Oil Seal (Part No.A8060177425ACD)
from
$48.73
ACDelco GM Original Equipment Engine Crankshaft Seals are high quality radial shaft seals, which seal in engine oil and keep dirt and water out, and are GM-recommended replacements for your vehicle’s original components. Made from synthetic rubber or plastic composite materials, this engine crankshaft seal conforms to the rotating crankshaft sealing surface to provide leak-free operation. These original equipment engine crankshaft seals have been manufactured to fit your specific GM vehicle, providing the same performance, durability, and service life you expect from General Motors.
Product Features:
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Product Features:
- High quality materials ensure long service life
- GM-recommended replacement part for your GM vehicle’s original factory component
- Offering the quality, reliability, and durability of GM OE
- Manufactured to GM OE specification for fit, form, and function
Carquest Premium – Chain (Part No.3SRH-60)
from
$28.99
Advance Auto Parts is proud to carry this part with the best fitment and performance requirements for this application, from the highest quality timing component vendor.
Product Features:
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Product Features:
- The chain is heat treated steel for durability and prerun for accurate fit
- Roller chain with 60 rollers and 0 timing marks
- Meets or exceeds O.E.M. performance
- Coated in rust preventative
Felpro – UPPER INTAKE MANIFOLD GASKET/ PLENUM GASKET (Part No.72764)
from
$5.79
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:
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Product Features:
- Each upper intake manifold gasket is built to meet or exceed all original equipment specifications
- Application specific design to ensure a perfect fit
- Engineered and manufactured specifically for the repair environment
- Unsurpassed quality you can trust
- Each Fel-Pro gasket, no matter how small, is engineered to exacting standards with proprietary design, engineering and manufacturing processes
Felpro – VALVE COVER GASKET SET (Part No.VS 50821 R)
from
$203.99
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:
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Product Features:
- DESIGNED FOR IMPERFECT SEALING SURFACES — Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces
- ENGINEERED TO PERFORM — Proprietary cork-rubber formulation
- SUPERIOR SEAL — Highly conformable to accommodate for the imperfect sealing surfaces
- EVERY PART FOR THE REPAIR — Fel-Pro gasket sets include every part needed for the repair unless otherwise noted
- REAL-WORLD TESTED — Parts are tested on-vehicle and validated to ensure optimal performance on the road
Cloyes Gear – Engine Timing Crankshaft Sprocket (Part No.S1111)
from
$68.99
Along with the timing chain, tensioners, and guides, sprockets are an integral component within the timing system. Timing gears and sprockets are available as part of complete timing kits as well as for individual purchase and installation.
Product Features:
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Product Features:
- Featuring precision-tooled or machined tooth form and precision-machined bore for true fit, timing chain sprockets offer reliability and dependability for engine rebuilds and typical replacement jobs
- Recommended that the chain tensioner(s), sprocket(s), and guide(s) also be replaced when the chain is replaced, as these components play a vital role in system stability and accurate timing
- CAD designed and manufactured using premium materials
- Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance
- Refer to our online catalog for detailed application-specific information
Felpro – OIL PAN GASKET SET (Part No.OS 30748)
from
$19.99
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:
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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 ensure a consistent and long-life seal across the entire oil pan
- PREVENTS OVERTIGHTENING — Torque limiters help eliminate overtightening and gasket splitting and extruding (where applicable)
- 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
- ENGINEERING EXPERTISE — Parts are designed, tested, validated and approved by Fel-Pro engineers through rigorous research and development
- ENGINEERING EXPERTISE — Parts are designed, tested, validated and approved by Fel-Pro engineers through rigorous research and development
Felpro – O-RING (Part No.73193)
from
$4.49
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:
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Product Features:
- Meets or exceeds all original equipment specifications
- Design to ensure a perfect fit
- Engineered and manufactured specifically for the repair environment
- Unsurpassed quality you can trust
- Each Fel-Pro gasket, no matter how small, is engineered to exacting standards with proprietary design, engineering and manufacturing processes
Carquest Premium – New MAP SENSOR (Part No.ECE1033)
from
$63.99
The Premium CarQuest Vehicle Solutions line is designed for OE form, fit and function for both import and domestic vehicles. The A/C Pressure Relief Valve is used in the automotive air conditioning system to prevent unusual over-pressure that may cause damage to critical components within the system or to the system as a whole. By opening it’s valve when the system pressure exceeds the preset pressure levels and closing when the internal pressure decreases to the preset pressure levels, proper factory designated system pressures are maintained.
Product Features:
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Product Features:
- Made to OE spec to ensure a proper fit, form and function.
- Sensors are engineered for precision performance, durability and a long service life.
- All units are tested using advanced end-of-line testing equipment that pressurizes the A/C Pressure Relief Valve and checks functionality to ensure each A/C Pressure Relief Valve meets manufacturing specifications before packaging.
ACDelco – GM Original Equipment Fuel Pump Tank Seal (Part No.E3004289666ACD)
from
$17.61
The ACDelco GM Original Equipment Fuel Pump Tank Seal is a GM-recommended replacement component that provides the same performance, durability, and service life as your factory original equipment.
Product Features:
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Product Features:
- GM-recommended replacement part for your GM vehicle’s original factory component
- Offering the quality, reliability, and durability of GM OE
- Manufactured to GM OE specification for fit, form, and function
Dorman – Magnetic Crankshaft Position Sensor (Part No.962-602)
from
$28.99
This engine crankshaft position sensor is designed to match the fit and function of an original sensor to help ensure the engine control unit receives proper inputs when an original sensor has failed from heat or internal component damage.
Product Features:
See More
Product Features:
- Direct replacement – this engine crankshaft position sensor is designed to match the fit and function of an original sensor on specified vehicles
- Ideal solution – engineered to help ensure the engine control unit receives proper inputs when an original sensor has failed from heat or internal component damage
- Durable construction – designed and manufactured to strict specifications for reliable performance
- Trustworthy quality – backed by a team of product experts in the United States and more than a century of automotive experience
ACDelco – Camshaft Position Se (Part No.A4015458532ACD)
from
$37.00
Camshaft Position Se
Felpro – Engine Timing Cover Gasket Set (Part No.TCS 45055)
from
$87.99
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:
See More
Product Features:
- Meets or exceeds all original equipment specifications
- Application specific design to ensure a perfect fit
- Engineered for the sealing repair environment
- Validated for fit, form and function
- Unsurpassed quality you can trust
- Includes all the parts necessary to complete the repair unless otherwise noted
- Includes all the parts necessary to complete the repair unless otherwise noted
Elring – Timing Cover Gasket (Part No.A8050546929ELR)
from
$29.43
Timing Cover Gasket
Felpro – Engine Cylinder Head Bolt Set (Part No.ES 73121)
from
$51.99
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:
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Product Features:
- Meets or exceeds all original equipment specifications
- Application specific design to ensure a perfect fit
- Avoid risk associated with re-use of T-T-Y (torque to yield) head bolts
- Validated for fit, form and function
- Unsurpassed quality you can trust
Felpro – CYLINDER HEAD BOLT SET (Part No.ES 72390)
from
$36.99
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:
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Product Features:
- Meets or exceeds all original equipment specifications
- Application specific design to ensure a perfect fit
- Avoid risk associated with re-use of T-T-Y (torque to yield) head bolts
- Validated for fit, form and function
- Unsurpassed quality you can trust
GM Genuine Parts – Oil Pan Seal (Part No.12621086)
from
$13.99
GM Genuine Parts Engine Oil Pan Seals are designed, engineered, and tested to rigorous standards, and are backed by General Motors. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).
Product Features:
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Product Features:
- Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
- GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
- GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
- GM regularly updates production and service part designs to integrate new materials and technologies
ACDelco – GM Original Equipment Engine Oil Pan Gasket (Part No.A6130659422ACD)
from
$19.12
ACDelco GM Original Equipment Engine Oil Pan Gasket is a GM-recommended replacement component that provides the same performance, durability, and service life as your factory original equipment.
Product Features:
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Product Features:
- GM-recommended replacement part for your GM vehicle’s original factory component
- Offering the quality, reliability, and durability of GM OE
- Manufactured to GM OE specification for fit, form, and function
GM Genuine Parts – Gen III/IV Lifter Guide (Part No.12595365)
from
$14.99
GM Genuine Parts Engine Valve Lifter Guide are designed, engineered, and tested to rigorous standards, and are backed by General Motors. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).
Product Features:
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Product Features:
- Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
- GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors.
- GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
- GM regularly updates production and service part designs to integrate new materials and technologies
Dorman – Rear Main Seal Cover Kit (Part No.635-518)
from
$74.99
Ensure the proper sealing of the engine with our Engine Rear Main Seal Cover. The Seal Cover is designed from high-quality materials to stop and prevent engine oil leakage.
Product Features:
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Product Features:
- Rear Main Seal Cover Kit.
- Rear Main Seal Cover Kit.
- Ensure the proper sealing of the engine with our Engine Rear Main Seal Cover. The Seal Cover is designed from high-quality materials to stop and prevent engine oil leakage.
- SPECIAL TOOL REQUIRED FOR INSTALLATIONá- GM alignment tool J414792B or Dorman 635-000 (or equivalent) is required to properly install cover assembly. Failure to use the correct tool and installation procedures will result in seal leaks.
- Comes with bolts and gaskets – everything necessary for a complete repair
Felpro – Engine Crankshaft Seal Kit (Part No.BS 40683)
from
$51.99
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:
See More
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
Felpro – Engine Crankshaft Seal Kit (Part No.BS 40640)
from
$41.99
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:
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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
Upgrade your 2020 GMC Sierra 3500 HD with Top-Quality Engine Parts
When it comes to maintaining or upgrading your 2020 GMC Sierra 3500 HD, nothing is more important than using high-quality OEM or aftermarket parts that you can trust. Whether you’re repairing damage to your GMC or enhancing its overall performance, Engine Parts are key to keeping your Sierra 3500 HD functioning at its best. At Advance Auto Parts, we offer a wide selection of 33 Engine Parts for the 2020 GMC Sierra 3500 HD, designed to meet your needs without breaking the bank.
From
Valve Cover and Cylinder Head
replacements to
Camshafts
upgrades, we’ve got you covered with parts that fit your vehicle perfectly and ensure long-lasting performance.
Affordable Prices and Wide Selection
Shopping for Engine Parts for any vehicle can be a hassle, especially if you’re on a budget. But with Advance Auto Parts, you can find high-quality Engine Parts for your 2020 GMC Sierra 3500 HD at great prices.
Our Engine Parts inventory for this model
ranges from just $4.49 to $87.99, with
an average price of $35.26.
Our 33 Engine Parts in stock come from 9 trusted brands, so you’re sure to find the right part for your 2020 GMC Sierra 3500 HD without overspending.
Explore Related Parts and More
While you’re here, don’t forget to check out other essential categories that go hand in hand with Engine Part upgrades. Explore related part types like Batteries and Chargers, Oil and Lubricants
and more to make sure your 2020 GMC Sierra 3500 HD is always ready to roll. We’re committed to providing you with everything you need to keep your Sierra 3500 HD in top shape, all in one place.
Start shopping confidently below for your 2020 GMC Sierra 3500 HD!
Best-Selling Valve Cover and Cylinder Heads for 2020 GMC Sierra 3500 HDs
Enhance the driving experience in your GMC with 3 quality Valve Cover and Cylinder Head components, starting at $4.49.
GM Genuine Parts – Gen III/IV Lifter Guide (Part No.12595365)
from
$14.99
GM Genuine Parts Engine Valve Lifter Guide are designed, engineered, and tested to rigorous standards, and are backed by General Motors. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).
Product Features:
See More
Product Features:
- Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
- GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors.
- GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
- GM regularly updates production and service part designs to integrate new materials and technologies
Felpro – O-RING (Part No.73193)
from
$4.49
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:
See More
Product Features:
- Meets or exceeds all original equipment specifications
- Design to ensure a perfect fit
- Engineered and manufactured specifically for the repair environment
- Unsurpassed quality you can trust
- Each Fel-Pro gasket, no matter how small, is engineered to exacting standards with proprietary design, engineering and manufacturing processes
Felpro – Engine Cylinder Head Bolt Set (Part No.ES 73121)
from
$51.99
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:
See More
Product Features:
- Meets or exceeds all original equipment specifications
- Application specific design to ensure a perfect fit
- Avoid risk associated with re-use of T-T-Y (torque to yield) head bolts
- Validated for fit, form and function
- Unsurpassed quality you can trust
Most Popular 2020 GMC Sierra 3500 HD Camshafts
Customize your GMC with 5 Camshafts products
like Camshaft Position Sensors and
Camshaft Seals, all
priced under $35.08.
ACDelco – Engine Camshaft Position Sensor (Part No.12636947)
from
$29.99
ACDelco GM Original Equipment Engine Camshaft Position Sensors monitor the rotational position of the camshaft(s), and are GM-recommended replacements for your vehicle’s original components. They provide a signal to the engine control module which compares the camshaft position with the crankshaft position to determine ignition and fuel injection timing. These original equipment engine camshaft position sensors have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.
Product Features:
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Product Features:
- Helps keep engine timing and fuel injection running in sync
- Helps provide proper alignment, positioning, and spacing for easy installation
- Synchronizes engine valves and pistons for excellent engine performance
- GM-recommended replacement part for your GM vehicle’s original factory component
- Offering the quality, reliability, and durability of GM OE
- Manufactured to GM OE specification for fit, form, and function
Mahle – Camshaft Retainer (Part No.A4355425751MAH)
from
$35.08
Camshaft Retainer
ACDelco – Engine Camshaft Position Sensor (Part No.12623093)
from
$29.99
ACDelco GM Original Equipment Engine Camshaft Position Sensors monitor the rotational position of the camshaft(s), and are GM-recommended replacements for your vehicle’s original components. They provide a signal to the engine control module which compares the camshaft position with the crankshaft position to determine ignition and fuel injection timing. These original equipment engine camshaft position sensors have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.
Product Features:
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Product Features:
- Helps keep engine timing and fuel injection running in sync
- Helps provide proper alignment, positioning, and spacing for easy installation
- Synchronizes engine valves and pistons for excellent engine performance
- GM-recommended replacement part for your GM vehicle’s original factory component
- Offering the quality, reliability, and durability of GM OE
- Manufactured to GM OE specification for fit, form, and function
Carquest Premium – Engine Camshaft Position Sensor (Part No.CSA4435)
from
$22.49
Engine Camshaft Position Sensor
Dorman – Magnetic Camshaft Position Sensor (Part No.962-277)
from
$21.99
This engine camshaft position sensor is designed to match the fit and function of an original sensor to help ensure the engine control unit receives proper inputs when an original sensor has failed from heat or internal component damage.
Product Features:
See More
Product Features:
- Direct replacement – this engine camshaft position sensor is designed to match the fit and function of an original sensor on specified vehicles
- Ideal solution – engineered to help ensure the engine control unit receives proper inputs when an original sensor has failed from heat or internal component damage
- Durable construction – designed and manufactured to strict specifications for reliable performance
- Trustworthy quality – backed by a team of product experts in the United States and more than a century of automotive experience
Top Picks for 2020 GMC Sierra 3500 HD Engine Timing Parts
Upgrade GMC Sierra 3500 HDs with top-quality Engine Timing Parts parts, including 2 OEM and aftermarket selections for your 2020 model.
Cloyes Gear – Engine Timing Chain (Part No.9-4205)
from
$39.99
A timing chain synchronizes the rotation of the crankshaft and camshaft(s) ensuring proper timing and allows the engine’s valves to open and close during each cylinder’s firing. Available in kits or as a stand-alone product, our chains are pre-stressed and heat-treated for increased durability. Our chains are engineered and manufactured with precision pitch control for proper chain-to-sprocket tooth fitment
Product Features:
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Product Features:
- Recommended that the chain tensioner(s), sprocket(s), and guide(s) also be replaced when the chain is replaced, as these components play a vital role in system stability and accurate timing
- Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance
- Engineered and manufactured with precision pitch control for proper chain-to-sprocket tooth fitment
- CAD designed and manufactured using premium materials
- Refer to our online catalog for detailed application-specific information
- Pre-Stressed And Heat-Treated For Increased Durability. Precision Cut Plates And Rollers With Smooth Finish. Precision Pitch Control For Proper Chain To Sprocket Tooth Fit.
Cloyes Gear – Engine Timing Crankshaft Sprocket (Part No.S1111)
from
$68.99
Along with the timing chain, tensioners, and guides, sprockets are an integral component within the timing system. Timing gears and sprockets are available as part of complete timing kits as well as for individual purchase and installation.
Product Features:
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Product Features:
- Featuring precision-tooled or machined tooth form and precision-machined bore for true fit, timing chain sprockets offer reliability and dependability for engine rebuilds and typical replacement jobs
- Recommended that the chain tensioner(s), sprocket(s), and guide(s) also be replaced when the chain is replaced, as these components play a vital role in system stability and accurate timing
- CAD designed and manufactured using premium materials
- Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance
- Refer to our online catalog for detailed application-specific information
In-Demand Engine Switches, Sensors and Relays for 2020 GMC Sierra 3500 HDs
Select from 5 premium Engine Switches, Sensors and Relays parts for your 2020 GMC Sierra 3500 HD, with prices ranging from $28.99 to $43.99.
ACDelco – Engine Crankshaft Position Sensor (Part No.12669636)
from
$39.99
ACDelco GM Original Equipment Engine Crankshaft Position Sensors monitor the position and rotational speed of the crankshaft, and are GM-recommended replacements for your vehicle’s original components. The signal from the crankshaft position sensor is used by the engine control module to determine fuel injection and ignition timing. These original equipment engine crankshaft position sensors have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.
Product Features:
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Product Features:
- This part requires programming and/or special setup procedures. GM Service Information describes the procedures and special tools needed to ensure proper operation in the vehicle
- Helps keep engine timing and fuel injection running in sync
- Helps provide proper alignment, positioning, and spacing for easy installation
- Synchronizes engine valves and pistons for excellent engine performance
- GM-recommended replacement part for your GM vehicle’s original factory component
- Offering the quality, reliability, and durability of GM OE
- Manufactured to GM OE specification for fit, form, and function
Carquest Premium – Engine Crankshaft Position Sensor (Part No.CSA1928)
from
$34.99
A leader in vehicle electronic solutions, each premium product meets or exceeds OE specifications in appearance, fit, and function, ensuring easy installation and excellent performance. The product has been tested under extreme environments, including thermal shock and vibration, with unparalleled reliability, durability, and accuracy.
Product Features:
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Product Features:
- Products are produced in ISO 14001 and IATF 16949 certified facilities to ensure the highest quality and consistency throughout the production process.
- Reliable circuit board and product structure design, 3D proofing, and field test verification to ensure correct signal output at all speeds.
- Manufactured in an anti-static environment to ensure reliability and stability.
- Extreme temperature and salt spray tests simulate real-world vehicle conditions to ensure durability and reliability.
- Providing this premium product line, we meet the service professionals needs with the highest quality product every time the part comes out of the box.
Carquest Premium – Engine Oil Level Sensor FFC1241 (Part No.FFC1241)
from
$43.99
The engine lubrication system is critical to engine operation and long life. On some vehicle applications, the engine control module monitors the engine oil level to ensure lubrication is not lost.
Product Features:
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Product Features:
- Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
- Computer-Aided Design (CAD), laser scanning and 3D printing ┐ utilizing Fused Deposition Modeling (FDM) and Stereolithography (SLA) ┐ in the part design process ensures speed-to-market and a precise fit guaranteed.
- Where applicable, robust circuit board design increases durability due to heat, shock, and random electro-magnetic pulses (EMP) and power spikes.
- Tin plated lead frame prevents corrosion and ensures a reliable terminal connection under adverse ambient conditions.
- 100% thermo-shock and vibration tested to ensure superior performance in extreme conditions.
- 100% end-of-line tested to ensure accurate signal output providing product reliability, every time.
ACDelco – Camshaft Position Se (Part No.A4015458532ACD)
from
$37.00
Camshaft Position Se
Dorman – Magnetic Crankshaft Position Sensor (Part No.962-602)
from
$28.99
This engine crankshaft position sensor is designed to match the fit and function of an original sensor to help ensure the engine control unit receives proper inputs when an original sensor has failed from heat or internal component damage.
Product Features:
See More
Product Features:
- Direct replacement – this engine crankshaft position sensor is designed to match the fit and function of an original sensor on specified vehicles
- Ideal solution – engineered to help ensure the engine control unit receives proper inputs when an original sensor has failed from heat or internal component damage
- Durable construction – designed and manufactured to strict specifications for reliable performance
- Trustworthy quality – backed by a team of product experts in the United States and more than a century of automotive experience
Most Sold 2020 GMC Sierra 3500 HD Engine Gaskets and Seals
Explore our best-selling GMC parts for the 2020 Sierra 3500 HD among 9 OEM and aftermarket options starting from $4.68.
Felpro – Engine Crankshaft Seal Kit (Part No.BS 40683)
from
$51.99
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:
See More
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
ACDelco – Intake Manifold Gask (Part No.A8040580030ACD)
from
$4.68
Intake Manifold Gask
Felpro – Engine Valve Cover Gasket Set (Part No.VS 50907 R)
from
$21.49
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:
See More
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
- EVERY PART FOR THE REPAIR — Fel-Pro gasket sets include every part needed for the repair unless otherwise noted
ACDelco – Valve Cover Gasket (Part No.A8030580015ACD)
from
$8.35
Valve Cover Gasket
ACDelco – Oil Pan Gasket (Part No.A6130756311ACD)
from
$9.94
Oil Pan Gasket
Felpro – Engine Timing Cover Gasket Set (Part No.TCS 45055)
from
$87.99
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:
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Product Features:
- Meets or exceeds all original equipment specifications
- Application specific design to ensure a perfect fit
- Engineered for the sealing repair environment
- Validated for fit, form and function
- Unsurpassed quality you can trust
- Includes all the parts necessary to complete the repair unless otherwise noted
- Includes all the parts necessary to complete the repair unless otherwise noted
ACDelco – GM Original Equipment Fuel Pump Tank Seal (Part No.E3004289666ACD)
from
$17.61
The ACDelco GM Original Equipment Fuel Pump Tank Seal is a GM-recommended replacement component that provides the same performance, durability, and service life as your factory original equipment.
Product Features:
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Product Features:
- GM-recommended replacement part for your GM vehicle’s original factory component
- Offering the quality, reliability, and durability of GM OE
- Manufactured to GM OE specification for fit, form, and function
ACDelco – Crank Seal Cover Gas (Part No.A2161579544ACD)
from
$12.11
Crank Seal Cover Gas
GM Genuine Parts – Oil Pan Gasket (Part No.12666993)
from
$5.49
GM Genuine Parts Engine Oil Pan Gaskets are designed, engineered, and tested to rigorous standards, and are backed by General Motors. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).
Product Features:
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Product Features:
- Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
- GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors.
- GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
- GM regularly updates production and service part designs to integrate new materials and technologies
FAQs for 2020 GMC Sierra 3500 HD Engine Parts
Which Engine Parts are best-sellers for 2020 GMC Sierra 3500 HDs?
Out of 33 Engine Parts that fit 2020 GMC Sierra 3500 HDs, the following parts are the top sellers:
- Gen III/IV Lifter Guide (11949076) – $14.99
- O-RING (12005635) – $4.49
- Engine Timing Chain (12152365) – $39.99
What’s the price range for 2020 GMC Sierra 3500 HD Engine Parts?
Engine Part prices for the 2020 GMC Sierra 3500 HD start at $4.49 and go up to $87.99 for the most premium parts.
What’s the average price of a Engine Part for a 2020 GMC Sierra 3500 HD?
The average price for Engine Parts for the 2020 GMC Sierra 3500 HD is $35.26. Keep in mind the variety of part types within our Engine Part category so you are likely to find a wide range of prices across a variety of parts and components.
Does Advance Auto Parts sell Engine Parts for other GMC Sierra 3500 HD model years?
What are the cheapest Engine Parts for my 2020 GMC Sierra 3500 HD?
The cheapest 2020 GMC Sierra 3500 HD Engine Parts we carry in stock are:
- O-RING (12005635) – $4.49
- Intake Manifold Gask (12129871) – $4.68
- Oil Pan Gasket (12515458) – $5.49
- Valve Cover Gasket (12170555) – $8.35
- Oil Pan Gasket (12108788) – $9.94
What types of Engine Parts do you sell for my 2020 GMC Sierra 3500 HD?
As of 2/5/25, these are some of the most in-demand types of Engine Parts for a 2020 GMC Sierra 3500 HD:
Can I get help with 2020 GMC Sierra 3500 HD Engine Part orders?
Contact our customer support team, by chat or phone, through the help desk page, where you can find instant answers about GMC Engine Parts and more.
What is your return policy for GMC Sierra 3500 HD Engine Parts?
Advance Auto Parts keeps returns simple. For new GMC Sierra 3500 HD Engine Parts and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.
