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Replacement and OEM Parts for 2021 GMC Sierra 3500 HD Valves, Valve Covers & Valvetrain Components

Home>Sierra 3500 HD>2021>Engine & Drivetrain>Valves, Valve Covers & Valvetrain Components

2021 GMC Sierra 3500 HD Valves, Valve Covers & Valvetrain Components

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2021 GMC Sierra 3500 HD

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Engine & Drivetrain

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47 products about 2021 GMC Sierra 3500 HD Valves, Valve Covers & Valvetrain Components found

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OEM (Genuine) 2021 GMC Sierra 3500 HD Valve Lifters
PartNumber: 12648846
Product Specifications
Other Names: Valve Lifters
Item Dimensions: 6.7 x 4.4 x 4.6 inches
Item Weight: 2.20 Pounds
Fitment Type: Direct Replacement
Replaced by: 12698945
Part Description: 2021 GMC Sierra 3500 HD Valve Lifters
More Info
Vehicle Fitment
2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT, WT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L GAS
$30.09 MSRP: ~~$49.82~~
You Save: $19.73 (40%)
View Related Parts
OEM (Genuine) 2021 GMC Sierra 3500 HD Filler Cap
PartNumber: 12662196
Product Specifications
Notes: 6.6 Liter Gas
Other Names: Engine Cover, Filler Cap
Item Dimensions: 1.1 x 1.0 x 1.1 inches
Item Weight: 1.20 Pounds
Fitment Type: Direct Replacement
Replaces: 12650076, 12655473
Replaced by: 12713786
Part Description: 2021 GMC Sierra 3500 HD Filler Cap
More Info
Vehicle Fitment
2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L GAS
$13.96 MSRP: ~~$26.30~~
You Save: $12.34 (47%)
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OEM (Genuine) 2021 GMC Sierra 3500 HD Valve Cover Gasket
PartNumber: 12619787
Product Specifications
Notes: Silverado, Sierra 3500 Hd; 6.6 Liter Gas
Location: Driver Side; Passenger Side
Other Names: Valve Cover Gasket
Item Dimensions: 20.9 x 5.0 x 0.5 inches
Item Weight: 0.40 Pounds
Fitment Type: Direct Replacement
Part Description: 2021 GMC Sierra 3500 HD Valve Cover Gasket
More Info
Vehicle Fitment
2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L GAS
$4.66 MSRP: ~~$7.38~~
You Save: $2.72 (37%)
View Related Parts
OEM (Genuine) 2021 GMC Sierra 3500 HD Valve Cover Gasket
PartNumber: 12619787
Product Specifications
Notes: Silverado, Sierra 3500 Hd; 6.6 Liter Gas
Location: Driver Side; Passenger Side
Other Names: Valve Cover Gasket
Item Dimensions: 20.9 x 5.0 x 0.5 inches
Item Weight: 0.40 Pounds
Fitment Type: Direct Replacement
Part Description: 2021 GMC Sierra 3500 HD Valve Cover Gasket
More Info
Vehicle Fitment
2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L GAS
$4.66 MSRP: ~~$7.38~~
You Save: $2.72 (37%)
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OEM (Genuine) 2021 GMC Sierra 3500 HD Push Rods
PartNumber: 12619828
Product Specifications
Notes: Silverado, Sierra 3500 Hd
Other Names: Push Rod
Item Dimensions: 8.7 x 0.9 x 0.5 inches
Item Weight: 0.50 Pounds
Fitment Type: Direct Replacement
Part Description: 2021 GMC Sierra 3500 HD Push Rods
More Info
Vehicle Fitment
2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L GAS
$3.78 MSRP: ~~$8.94~~
You Save: $5.16 (58%)
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OEM (Genuine) 2021 GMC Sierra 3500 HD Rocker Arms
PartNumber: 12619829
Product Specifications
Notes: Silverado, Sierra 3500 Hd
Other Names: Rocker Arms
Item Dimensions: 3.5 x 2.8 x 1.6 inches
Item Weight: 0.60 Pounds
Fitment Type: Direct Replacement
Part Description: 2021 GMC Sierra 3500 HD Rocker Arms
More Info
Vehicle Fitment
2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L GAS
$14.97 MSRP: ~~$24.75~~
You Save: $9.78 (40%)
View Related Parts
OEM (Genuine) 2021 GMC Sierra 3500 HD Valve Cover
PartNumber: 12680249
Product Specifications
Notes: Silverado, Sierra 3500 Hd; Right; 6.6 Liter Diesel, Upper Components
Location: Passenger Side
Other Names: Valve Cover
Item Dimensions: 20.8 x 9.2 x 5.0 inches
Fitment Type: Direct Replacement
Part Description: 2021 GMC Sierra 3500 HD Valve Cover
More Info
Vehicle Fitment
2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L DIESEL
$118.29 MSRP: ~~$187.82~~
You Save: $69.53 (38%)
View Related Parts
OEM (Genuine) 2021 GMC Sierra 3500 HD Valve Cover
PartNumber: 12677065
Product Specifications
Notes: Silverado, Sierra 3500 Hd; Left; 6.6 Liter Diesel, Upper Components
Location: Driver Side
Other Names: Valve Cover
Item Dimensions: 30.0 x 14.4 x 7.0 inches
Item Weight: 7.80 Pounds
Fitment Type: Direct Replacement
Replaces: 12677064
Part Description: 2021 GMC Sierra 3500 HD Valve Cover
More Info
Vehicle Fitment
2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L DIESEL
$116.94 MSRP: ~~$185.66~~
You Save: $68.72 (38%)
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OEM (Genuine) 2021 GMC Sierra 3500 HD Valve Keeper
PartNumber: 10166345
Product Specifications
Notes: Silverado, Sierra 3500 Hd
Other Names: Valve Keeper
Item Dimensions: 2.1 x 1.6 x 0.3 inches
Item Weight: 0.50 Pounds
Fitment Type: Direct Replacement
Part Description: 2021 GMC Sierra 3500 HD Valve Keeper
More Info
Vehicle Fitment
2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT, WT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L GAS
$3.26 MSRP: ~~$5.17~~
You Save: $1.91 (37%)
View Related Parts
OEM (Genuine) 2021 GMC Sierra 3500 HD Filler Tube
PartNumber: 12668614
Product Specifications
Notes: 6.6 Liter Gas
Item Dimensions: 3.2 x 2.3 x 2.0 inches
Item Weight: 0.40 Pounds
Fitment Type: Direct Replacement
Replaces: 12634025
Part Description: 2021 GMC Sierra 3500 HD Filler Tube
More Info
Vehicle Fitment
2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L GAS
$4.58 MSRP: ~~$7.58~~
You Save: $3.00 (40%)
View Related Parts
OEM (Genuine) 2021 GMC Sierra 3500 HD Valve Seals
PartNumber: 12689006
Product Specifications
Notes: Silverado, Sierra 3500 Hd; Exhaust
Other Names: Valve Seal
Item Dimensions: 1.9 x 1.9 x 1.1 inches
Item Weight: 0.30 Pounds
Fitment Type: Direct Replacement
Replaces: 12645472
Part Description: 2021 GMC Sierra 3500 HD Valve Seals
More Info
Vehicle Fitment
2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L GAS
$4.66 MSRP: ~~$7.39~~
You Save: $2.73 (37%)
View Related Parts
OEM (Genuine) 2021 GMC Sierra 3500 HD Head Gasket
PartNumber: 12636479
Product Specifications
Other Names: Head Gasket
Item Dimensions: 9.1 x 21.8 x 0.2 inches
Item Weight: 1.20 Pounds
Fitment Type: Direct Replacement
Replaced by: 12727485
Part Description: 2021 GMC Sierra 3500 HD Head Gasket
More Info
Vehicle Fitment
2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L DIESEL
$61.11 MSRP: ~~$97.03~~
You Save: $35.92 (38%)
View Related Parts
OEM (Genuine) 2021 GMC Sierra 3500 HD Head Gasket
PartNumber: 12636479
Product Specifications
Other Names: Head Gasket
Item Dimensions: 9.1 x 21.8 x 0.2 inches
Item Weight: 1.20 Pounds
Fitment Type: Direct Replacement
Replaced by: 12727485
Part Description: 2021 GMC Sierra 3500 HD Head Gasket
More Info
Vehicle Fitment
2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L DIESEL
$61.11 MSRP: ~~$97.03~~
You Save: $35.92 (38%)
View Related Parts
OEM (Genuine) 2021 GMC Sierra 3500 HD Valve Seals
PartNumber: 12689007
Product Specifications
Notes: Silverado, Sierra 3500 Hd; Intake
Other Names: Valve Seal
Item Dimensions: 1.8 x 1.9 x 1.0 inches
Item Weight: 0.30 Pounds
Fitment Type: Direct Replacement
Replaces: 12645473
Part Description: 2021 GMC Sierra 3500 HD Valve Seals
More Info
Vehicle Fitment
2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L GAS
$5.10 MSRP: ~~$8.09~~
You Save: $2.99 (37%)
View Related Parts
OEM (Genuine) 2021 GMC Sierra 3500 HD Filler Cap
PartNumber: 12677347
Product Specifications
Notes: 6.6 Liter Diesel, Upper Components
Other Names: Filler Cap
Item Dimensions: 3.0 x 3.2 x 2.1 inches
Item Weight: 0.50 Pounds
Fitment Type: Direct Replacement
Replaces: 12683621
Part Description: 2021 GMC Sierra 3500 HD Filler Cap
More Info
Vehicle Fitment
2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L DIESEL
$8.84 MSRP: ~~$16.07~~
You Save: $7.23 (45%)
View Related Parts
OEM (Genuine) 2021 GMC Sierra 3500 HD Valve Cover
PartNumber: 12689124
Product Specifications
Other Names: Valve Cover
Item Dimensions: 20.6 x 6.1 x 4.5 inches
Fitment Type: Direct Replacement
Replaced by: 12723317
Part Description: 2021 GMC Sierra 3500 HD Valve Cover
More Info
Vehicle Fitment
2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L GAS
$64.83 MSRP: ~~$107.31~~
You Save: $42.48 (40%)
View Related Parts
OEM (Genuine) 2021 GMC Sierra 3500 HD Head Gasket
PartNumber: 12688186
Product Specifications
Notes: Silverado, Sierra 3500 Hd
Other Names: Head Gasket
Item Dimensions: 21.7 x 9.1 x 0.2 inches
Item Weight: 1.10 Pounds
Fitment Type: Direct Replacement
Part Description: 2021 GMC Sierra 3500 HD Head Gasket
More Info
Vehicle Fitment
2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L GAS
$66.49 MSRP: ~~$110.07~~
You Save: $43.58 (40%)
View Related Parts
OEM (Genuine) 2021 GMC Sierra 3500 HD Head Gasket
PartNumber: 12688186
Product Specifications
Notes: Silverado, Sierra 3500 Hd
Other Names: Head Gasket
Item Dimensions: 21.7 x 9.1 x 0.2 inches
Item Weight: 1.10 Pounds
Fitment Type: Direct Replacement
Part Description: 2021 GMC Sierra 3500 HD Head Gasket
More Info
Vehicle Fitment
2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L GAS
$66.49 MSRP: ~~$110.07~~
You Save: $43.58 (40%)
View Related Parts
OEM (Genuine) 2021 GMC Sierra 3500 HD Rocker Arms
PartNumber: 12636189
Product Specifications
Notes: Silverado, Sierra 3500 Hd; Intake
Other Names: Rocker Arms
Item Dimensions: 5.2 x 2.1 x 2.0 inches
Item Weight: 0.70 Pounds
Fitment Type: Direct Replacement
Part Description: 2021 GMC Sierra 3500 HD Rocker Arms
More Info
Vehicle Fitment
2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L DIESEL
$16.63 MSRP: ~~$26.39~~
You Save: $9.76 (37%)
View Related Parts
OEM (Genuine) 2021 GMC Sierra 3500 HD Rocker Arms
PartNumber: 12636190
Product Specifications
Notes: Silverado, Sierra 3500 Hd; Exhaust
Other Names: Rocker Arms
Item Dimensions: 5.2 x 2.0 x 2.1 inches
Item Weight: 0.80 Pounds
Fitment Type: Direct Replacement
Part Description: 2021 GMC Sierra 3500 HD Rocker Arms
More Info
Vehicle Fitment
2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L DIESEL
$16.63 MSRP: ~~$26.39~~
You Save: $9.76 (37%)
View Related Parts
OEM (Genuine) 2021 GMC Sierra 3500 HD Valve Cover Gasket
PartNumber: 12691860
Product Specifications
Notes: Silverado, Sierra 3500 Hd; 6.6 Liter Diesel, Upper Components
Location: Driver Side; Passenger Side
Other Names: Valve Cover Gasket
Item Dimensions: 22.9 x 9.0 x 0.5 inches
Item Weight: 0.30 Pounds
Fitment Type: Direct Replacement
Replaces: 12643242
Part Description: 2021 GMC Sierra 3500 HD Valve Cover Gasket
More Info
Vehicle Fitment
2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L DIESEL
$19.86 MSRP: ~~$31.50~~
You Save: $11.64 (37%)
View Related Parts
OEM (Genuine) 2021 GMC Sierra 3500 HD Valve Cover Gasket
PartNumber: 12691860
Product Specifications
Notes: Silverado, Sierra 3500 Hd; 6.6 Liter Diesel, Upper Components
Location: Driver Side; Passenger Side
Other Names: Valve Cover Gasket
Item Dimensions: 22.9 x 9.0 x 0.5 inches
Item Weight: 0.30 Pounds
Fitment Type: Direct Replacement
Replaces: 12643242
Part Description: 2021 GMC Sierra 3500 HD Valve Cover Gasket
More Info
Vehicle Fitment
2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L DIESEL
$19.86 MSRP: ~~$31.50~~
You Save: $11.64 (37%)
View Related Parts
OEM (Genuine) 2021 GMC Sierra 3500 HD Valves
PartNumber: 12636187
Product Specifications
Notes: Silverado, Sierra 3500 Hd; Exhaust
Other Names: Valves
Item Dimensions: 5.2 x 1.3 x 1.3 inches
Item Weight: 0.60 Pounds
Fitment Type: Direct Replacement
Part Description: 2021 GMC Sierra 3500 HD Valves
More Info
Vehicle Fitment
2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L DIESEL
$10.04 MSRP: ~~$15.94~~
You Save: $5.90 (38%)
View Related Parts
OEM (Genuine) 2021 GMC Sierra 3500 HD Valves
PartNumber: 12636187
Product Specifications
Notes: Silverado, Sierra 3500 Hd; Exhaust
Other Names: Valves
Item Dimensions: 5.2 x 1.3 x 1.3 inches
Item Weight: 0.60 Pounds
Fitment Type: Direct Replacement
Part Description: 2021 GMC Sierra 3500 HD Valves
More Info
Vehicle Fitment
2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L DIESEL
$10.04 MSRP: ~~$15.94~~
You Save: $5.90 (38%)
View Related Parts
OEM (Genuine) 2021 GMC Sierra 3500 HD Valves
PartNumber: 12636188
Product Specifications
Notes: Silverado, Sierra 3500 Hd; Intake
Other Names: Valves
Item Dimensions: 5.1 x 1.3 x 1.3 inches
Item Weight: 0.50 Pounds
Fitment Type: Direct Replacement
Replaced by: 12734017
Part Description: 2021 GMC Sierra 3500 HD Valves
More Info
Vehicle Fitment
2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L DIESEL
$7.92 MSRP: ~~$12.55~~
You Save: $4.63 (37%)
View Related Parts
OEM (Genuine) 2021 GMC Sierra 3500 HD Valves
PartNumber: 12636188
Product Specifications
Notes: Silverado, Sierra 3500 Hd; Intake
Other Names: Valves
Item Dimensions: 5.1 x 1.3 x 1.3 inches
Item Weight: 0.50 Pounds
Fitment Type: Direct Replacement
Replaced by: 12734017
Part Description: 2021 GMC Sierra 3500 HD Valves
More Info
Vehicle Fitment
2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L DIESEL
$7.92 MSRP: ~~$12.55~~
You Save: $4.63 (37%)
View Related Parts
OEM (Genuine) 2021 GMC Sierra 3500 HD Intake Valve
PartNumber: 12671856
Product Specifications
Notes: Silverado, Sierra 3500 Hd
Other Names: Intake Valve
Fitment Type: Direct Replacement
Replaced by: 12703404
Part Description: 2021 GMC Sierra 3500 HD Intake Valve
More Info
Vehicle Fitment
2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L GAS
$13.96 MSRP: ~~$23.08~~
You Save: $9.12 (40%)
View Related Parts
OEM (Genuine) 2021 GMC Sierra 3500 HD Valve Springs
PartNumber: 12677931
Product Specifications
Other Names: Valve Spring
Item Dimensions: 2.8 x 1.9 x 1.4 inches
Item Weight: 0.70 Pounds
Fitment Type: Direct Replacement
Replaced by: 12728733
Part Description: 2021 GMC Sierra 3500 HD Valve Springs
More Info
Vehicle Fitment
2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT | 8 Cyl 6.6 L GAS
$4.47 MSRP: ~~$7.39~~
You Save: $2.92 (40%)
View Related Parts
OEM (Genuine) 2021 GMC Sierra 3500 HD Cap-Valve Spring
PartNumber: 10166344
Product Specifications
Notes: Silverado, Sierra 3500 Hd
Item Dimensions: 2.2 x 2.0 x 1.7 inches
Item Weight: 0.60 Pounds
Fitment Type: Direct Replacement
Part Description: 2021 GMC Sierra 3500 HD Cap-Valve Spring
More Info
Vehicle Fitment
2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT, WT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L GAS
$3.28 MSRP: ~~$5.70~~
You Save: $2.42 (43%)
View Related Parts
OEM (Genuine) 2021 GMC Sierra 3500 HD Cap-Valve Spring
PartNumber: 10166344
Product Specifications
Notes: Silverado, Sierra 3500 Hd
Item Dimensions: 2.2 x 2.0 x 1.7 inches
Item Weight: 0.60 Pounds
Fitment Type: Direct Replacement
Part Description: 2021 GMC Sierra 3500 HD Cap-Valve Spring
More Info
Vehicle Fitment
2021 GMC Sierra 3500 HD | AT4, Base, Denali, SLE, SLT, WT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L GAS
$3.28 MSRP: ~~$5.70~~
You Save: $2.42 (43%)

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