National 711012 Transfer Case Input Shaft Seal
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National 711012 Transfer Case Input Shaft Seal

Brand National 711012
Fits Chevrolet and GMC · 143 vehicles

Premium sealing solutions. Built on more than 75 years of sealing expertise.

Transfer case seal. Helps keep the sealing system working as intended.

$34.03Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
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Step 2 — Quantity
Order total $34.03
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.
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Transfer Case Input Shaft Seal for GM 4WD

National 711012 is a transfer case input shaft seal built for select Chevrolet and GMC 4WD trucks and SUVs with Magna transfer cases. It is a direct-fit sealing solution for vehicles using a double-lip design, helping maintain transfer case fluid control at the input shaft.

Key Features

  • Transfer case input shaft seal for select GM part-time 4WD applications
  • Double-lip design for improved sealing at the input shaft
  • Fits Magna 1222, 1225, 1226, 1625, and 1626 transfer cases
  • Compatible with Chevrolet Silverado and GMC Sierra models listed below
  • National part number 711012

Detailed Description

National 711012 is engineered for transfer case sealing service on 2011-2019 Chevrolet Silverado 1500, Silverado 2500 HD, Silverado 3500 HD, GMC Sierra 1500, Sierra 2500 HD, and Sierra 3500 HD applications, plus 2016-2019 Chevrolet Suburban 3500 HD and 2011-2014 Chevrolet Silverado 2500 models. It is specified for vehicles with part-time 4WD and 2-speed transfer cases, making it a focused replacement for GM driveline service work. National has supplied sealing products for decades and continues to develop solutions for modern vehicle systems.

Common Problems This Seal Can Address

  • Transfer case fluid seepage at the input shaft
  • Visible oil residue around the transfer case housing
  • Loss of sealing performance from a worn shaft seal
  • Service needs on Magna transfer case-equipped GM trucks
  • Maintenance after driveline noise or fluid contamination inspections

Installation Notes and Tips

Confirm the transfer case model and seal design before ordering. This part fits vehicles with the listed Magna transfer cases and double-lip design only. Inspect the input shaft and sealing surface for wear or damage during service, and verify the transfer case is properly filled with the correct fluid after installation.

Quality Assurance

National is known for sealing products backed by more than 75 years of industry experience. Part number 711012 reflects that focus on durable sealing solutions for Chevrolet Silverado, GMC Sierra, and related GM transfer case applications.

This part fits 143 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelDrive TypeNotes
2019ChevroletSilverado 15004WDwith Double_Lip Design; with Magna_1222 Transfer Case; with Part Time 4WD; 2 Speed
2019ChevroletSilverado 2500 HD4WDwith Double_Lip Design; with Magna_1226 Transfer Case; with Part Time 4WD; 2 Speed
2019ChevroletSilverado 2500 HD4WDwith Double_Lip Design; with Magna_1625 Transfer Case; with Part Time 4WD; 2 Speed
2019ChevroletSilverado 2500 HD4WDwith Double_Lip Design; with Magna_1225 Transfer Case; with Part Time 4WD; 2 Speed
2019ChevroletSilverado 2500 HD4WDwith Double_Lip Design; with Magna_1626 Transfer Case; with Part Time 4WD; 2 Speed
2019ChevroletSuburban 3500 HD4WDwith Double_Lip Design; with Magna_1626 Transfer Case; with Part Time 4WD; 2 Speed
2019ChevroletSuburban 3500 HD4WDwith Double_Lip Design; with Magna_1625 Transfer Case; with Part Time 4WD; 2 Speed
2019GMCSierra 15004WDwith Double_Lip Design; with Magna_1222 Transfer Case; with Part Time 4WD; 2 Speed
2019GMCSierra 2500 HD4WDwith Double_Lip Design; with Magna_1225 Transfer Case; with Part Time 4WD; 2 Speed
2019GMCSierra 2500 HD4WDwith Double_Lip Design; with Magna_1226 Transfer Case; with Part Time 4WD; 2 Speed
2019GMCSierra 2500 HD4WDwith Double_Lip Design; with Magna_1625 Transfer Case; with Part Time 4WD; 2 Speed
2019GMCSierra 2500 HD4WDwith Double_Lip Design; with Magna_1626 Transfer Case; with Part Time 4WD; 2 Speed
2019GMCSierra 3500 HD4WDwith Double_Lip Design; with Magna_1626 Transfer Case; with Part Time 4WD; 2 Speed
2019GMCSierra 3500 HD4WDwith Double_Lip Design; with Magna_1226 Transfer Case; with Part Time 4WD; 2 Speed
2018ChevroletSilverado 15004WDwith Double_Lip Design; with Magna_1222 Transfer Case; with Part Time 4WD; 2 Speed
2018ChevroletSilverado 2500 HD4WDwith Double_Lip Design; with Magna_1226 Transfer Case; with Part Time 4WD; 2 Speed
2018ChevroletSilverado 2500 HD4WDwith Double_Lip Design; with Magna_1625 Transfer Case; with Part Time 4WD; 2 Speed
2018ChevroletSilverado 2500 HD4WDwith Double_Lip Design; with Magna_1225 Transfer Case; with Part Time 4WD; 2 Speed
2018ChevroletSilverado 2500 HD4WDwith Double_Lip Design; with Magna_1626 Transfer Case; with Part Time 4WD; 2 Speed
2018ChevroletSilverado 3500 HD4WDwith Double_Lip Design; with Magna_1226 Transfer Case; with Part Time 4WD; 2 Speed
2018ChevroletSilverado 3500 HD4WDwith Double_Lip Design; with Magna_1626 Transfer Case; with Part Time 4WD; 2 Speed
2018ChevroletSuburban 3500 HD4WDwith Double_Lip Design; with Magna_1626 Transfer Case; with Part Time 4WD; 2 Speed
2018ChevroletSuburban 3500 HD4WDwith Double_Lip Design; with Magna_1625 Transfer Case; with Part Time 4WD; 2 Speed
2018GMCSierra 15004WDwith Double_Lip Design; with Magna_1222 Transfer Case; with Part Time 4WD; 2 Speed
2018GMCSierra 2500 HD4WDwith Double_Lip Design; with Magna_1225 Transfer Case; with Part Time 4WD; 2 Speed
2018GMCSierra 2500 HD4WDwith Double_Lip Design; with Magna_1226 Transfer Case; with Part Time 4WD; 2 Speed
2018GMCSierra 2500 HD4WDwith Double_Lip Design; with Magna_1625 Transfer Case; with Part Time 4WD; 2 Speed
2018GMCSierra 2500 HD4WDwith Double_Lip Design; with Magna_1626 Transfer Case; with Part Time 4WD; 2 Speed
2018GMCSierra 3500 HD4WDwith Double_Lip Design; with Magna_1626 Transfer Case; with Part Time 4WD; 2 Speed
2018GMCSierra 3500 HD4WDwith Double_Lip Design; with Magna_1226 Transfer Case; with Part Time 4WD; 2 Speed
2017ChevroletSilverado 15004WDwith Double_Lip Design; with Magna_1222 Transfer Case; with Part Time 4WD; 2 Speed
2017ChevroletSilverado 2500 HD4WDwith Double_Lip Design; with Magna_1226 Transfer Case; with Part Time 4WD; 2 Speed
2017ChevroletSilverado 2500 HD4WDwith Double_Lip Design; with Magna_1625 Transfer Case; with Part Time 4WD; 2 Speed
2017ChevroletSilverado 2500 HD4WDwith Double_Lip Design; with Magna_1225 Transfer Case; with Part Time 4WD; 2 Speed
2017ChevroletSilverado 2500 HD4WDwith Double_Lip Design; with Magna_1626 Transfer Case; with Part Time 4WD; 2 Speed
2017ChevroletSilverado 3500 HD4WDwith Double_Lip Design; with Magna_1226 Transfer Case; with Part Time 4WD; 2 Speed
2017ChevroletSilverado 3500 HD4WDwith Double_Lip Design; with Magna_1626 Transfer Case; with Part Time 4WD; 2 Speed
2017ChevroletSuburban 3500 HD4WDwith Double_Lip Design; with Magna_1626 Transfer Case; with Part Time 4WD; 2 Speed
2017ChevroletSuburban 3500 HD4WDwith Double_Lip Design; with Magna_1625 Transfer Case; with Part Time 4WD; 2 Speed
2017GMCSierra 15004WDwith Double_Lip Design; with Magna_1222 Transfer Case; with Part Time 4WD; 2 Speed
2017GMCSierra 2500 HD4WDwith Double_Lip Design; with Magna_1225 Transfer Case; with Part Time 4WD; 2 Speed
2017GMCSierra 2500 HD4WDwith Double_Lip Design; with Magna_1226 Transfer Case; with Part Time 4WD; 2 Speed
2017GMCSierra 2500 HD4WDwith Double_Lip Design; with Magna_1625 Transfer Case; with Part Time 4WD; 2 Speed
2017GMCSierra 2500 HD4WDwith Double_Lip Design; with Magna_1626 Transfer Case; with Part Time 4WD; 2 Speed
2017GMCSierra 3500 HD4WDwith Double_Lip Design; with Magna_1626 Transfer Case; with Part Time 4WD; 2 Speed
2017GMCSierra 3500 HD4WDwith Double_Lip Design; with Magna_1226 Transfer Case; with Part Time 4WD; 2 Speed
2016ChevroletSilverado 15004WDwith Double_Lip Design; with Magna_1222 Transfer Case; with Part Time 4WD; 2 Speed
2016ChevroletSilverado 2500 HD4WDwith Double_Lip Design; with Magna_1226 Transfer Case; with Part Time 4WD; 2 Speed
2016ChevroletSilverado 2500 HD4WDwith Double_Lip Design; with Magna_1625 Transfer Case; with Part Time 4WD; 2 Speed
2016ChevroletSilverado 2500 HD4WDwith Double_Lip Design; with Magna_1225 Transfer Case; with Part Time 4WD; 2 Speed
2016ChevroletSilverado 2500 HD4WDwith Double_Lip Design; with Magna_1626 Transfer Case; with Part Time 4WD; 2 Speed
2016ChevroletSilverado 3500 HD4WDwith Double_Lip Design; with Magna_1226 Transfer Case; with Part Time 4WD; 2 Speed
2016ChevroletSilverado 3500 HD4WDwith Double_Lip Design; with Magna_1626 Transfer Case; with Part Time 4WD; 2 Speed
2016ChevroletSuburban 3500 HD4WDwith Double_Lip Design; with Magna_1626 Transfer Case; with Part Time 4WD; 2 Speed
2016ChevroletSuburban 3500 HD4WDwith Double_Lip Design; with Magna_1625 Transfer Case; with Part Time 4WD; 2 Speed
2016GMCSierra 15004WDwith Double_Lip Design; with Magna_1222 Transfer Case; with Part Time 4WD; 2 Speed
2016GMCSierra 2500 HD4WDwith Double_Lip Design; with Magna_1225 Transfer Case; with Part Time 4WD; 2 Speed
2016GMCSierra 2500 HD4WDwith Double_Lip Design; with Magna_1226 Transfer Case; with Part Time 4WD; 2 Speed
2016GMCSierra 2500 HD4WDwith Double_Lip Design; with Magna_1625 Transfer Case; with Part Time 4WD; 2 Speed
2016GMCSierra 2500 HD4WDwith Double_Lip Design; with Magna_1626 Transfer Case; with Part Time 4WD; 2 Speed
2016GMCSierra 3500 HD4WDwith Double_Lip Design; with Magna_1626 Transfer Case; with Part Time 4WD; 2 Speed
2016GMCSierra 3500 HD4WDwith Double_Lip Design; with Magna_1226 Transfer Case; with Part Time 4WD; 2 Speed
2015ChevroletSilverado 15004WDwith Double_Lip Design; with Magna_1222 Transfer Case; with Part Time 4WD; 2 Speed
2015ChevroletSilverado 2500 HD4WDwith Double_Lip Design; with Magna_1226 Transfer Case; with Part Time 4WD; 2 Speed
2015ChevroletSilverado 2500 HD4WDwith Double_Lip Design; with Magna_1625 Transfer Case; with Part Time 4WD; 2 Speed
2015ChevroletSilverado 2500 HD4WDwith Double_Lip Design; with Magna_1225 Transfer Case; with Part Time 4WD; 2 Speed
2015ChevroletSilverado 2500 HD4WDwith Double_Lip Design; with Magna_1626 Transfer Case; with Part Time 4WD; 2 Speed
2015ChevroletSilverado 3500 HD4WDwith Double_Lip Design; with Magna_1226 Transfer Case; with Part Time 4WD; 2 Speed
2015ChevroletSilverado 3500 HD4WDwith Double_Lip Design; with Magna_1626 Transfer Case; with Part Time 4WD; 2 Speed
2015GMCSierra 15004WDwith Double_Lip Design; with Magna_1222 Transfer Case; with Part Time 4WD; 2 Speed
2015GMCSierra 2500 HD4WDwith Double_Lip Design; with Magna_1225 Transfer Case; with Part Time 4WD; 2 Speed
2015GMCSierra 2500 HD4WDwith Double_Lip Design; with Magna_1226 Transfer Case; with Part Time 4WD; 2 Speed
2015GMCSierra 2500 HD4WDwith Double_Lip Design; with Magna_1625 Transfer Case; with Part Time 4WD; 2 Speed
2015GMCSierra 2500 HD4WDwith Double_Lip Design; with Magna_1626 Transfer Case; with Part Time 4WD; 2 Speed
2015GMCSierra 3500 HD4WDwith Double_Lip Design; with Magna_1626 Transfer Case; with Part Time 4WD; 2 Speed
2015GMCSierra 3500 HD4WDwith Double_Lip Design; with Magna_1226 Transfer Case; with Part Time 4WD; 2 Speed
2014ChevroletSilverado 15004WDwith Double_Lip Design; with Magna_1222 Transfer Case; with Part Time 4WD; 2 Speed
2014ChevroletSilverado 25004WDwith Double_Lip Design; with Magna_1626 Transfer Case; with Part Time 4WD; 2 Speed
2014ChevroletSilverado 25004WDwith Double_Lip Design; with Magna_1625 Transfer Case; with Part Time 4WD; 2 Speed
2014ChevroletSilverado 2500 HD4WDwith Double_Lip Design; with Magna_1226 Transfer Case; with Part Time 4WD; 2 Speed
2014ChevroletSilverado 2500 HD4WDwith Double_Lip Design; with Magna_1625 Transfer Case; with Part Time 4WD; 2 Speed
2014ChevroletSilverado 2500 HD4WDwith Double_Lip Design; with Magna_1225 Transfer Case; with Part Time 4WD; 2 Speed
2014ChevroletSilverado 2500 HD4WDwith Double_Lip Design; with Magna_1626 Transfer Case; with Part Time 4WD; 2 Speed
2014ChevroletSilverado 3500 HD4WDwith Double_Lip Design; with Magna_1226 Transfer Case; with Part Time 4WD; 2 Speed
2014ChevroletSilverado 3500 HD4WDwith Double_Lip Design; with Magna_1626 Transfer Case; with Part Time 4WD; 2 Speed
2014GMCSierra 15004WDwith Double_Lip Design; with Magna_1222 Transfer Case; with Part Time 4WD; 2 Speed
2014GMCSierra 2500 HD4WDwith Double_Lip Design; with Magna_1225 Transfer Case; with Part Time 4WD; 2 Speed
2014GMCSierra 2500 HD4WDwith Double_Lip Design; with Magna_1226 Transfer Case; with Part Time 4WD; 2 Speed
2014GMCSierra 2500 HD4WDwith Double_Lip Design; with Magna_1625 Transfer Case; with Part Time 4WD; 2 Speed
2014GMCSierra 2500 HD4WDwith Double_Lip Design; with Magna_1626 Transfer Case; with Part Time 4WD; 2 Speed
2014GMCSierra 3500 HD4WDwith Double_Lip Design; with Magna_1626 Transfer Case; with Part Time 4WD; 2 Speed
2014GMCSierra 3500 HD4WDwith Double_Lip Design; with Magna_1226 Transfer Case; with Part Time 4WD; 2 Speed
2013ChevroletSilverado 15004WDwith Double_Lip Design; with Magna_1222 Transfer Case; with Part Time 4WD; 2 Speed
2013ChevroletSilverado 25004WDwith Double_Lip Design; with Magna_1626 Transfer Case; with Part Time 4WD; 2 Speed
2013ChevroletSilverado 25004WDwith Double_Lip Design; with Magna_1625 Transfer Case; with Part Time 4WD; 2 Speed
2013ChevroletSilverado 2500 HD4WDwith Double_Lip Design; with Magna_1226 Transfer Case; with Part Time 4WD; 2 Speed
2013ChevroletSilverado 2500 HD4WDwith Double_Lip Design; with Magna_1625 Transfer Case; with Part Time 4WD; 2 Speed
2013ChevroletSilverado 2500 HD4WDwith Double_Lip Design; with Magna_1225 Transfer Case; with Part Time 4WD; 2 Speed
2013ChevroletSilverado 2500 HD4WDwith Double_Lip Design; with Magna_1626 Transfer Case; with Part Time 4WD; 2 Speed
2013ChevroletSilverado 3500 HD4WDwith Double_Lip Design; with Magna_1226 Transfer Case; with Part Time 4WD; 2 Speed
2013ChevroletSilverado 3500 HD4WDwith Double_Lip Design; with Magna_1626 Transfer Case; with Part Time 4WD; 2 Speed
2013GMCSierra 15004WDwith Double_Lip Design; with Magna_1222 Transfer Case; with Part Time 4WD; 2 Speed
2013GMCSierra 1500AWDwith Double_Lip Design; with Magna_1222 Transfer Case; with Part Time 4WD; 2 Speed
2013GMCSierra 2500 HD4WDwith Double_Lip Design; with Magna_1225 Transfer Case; with Part Time 4WD; 2 Speed
2013GMCSierra 2500 HD4WDwith Double_Lip Design; with Magna_1226 Transfer Case; with Part Time 4WD; 2 Speed
2013GMCSierra 2500 HD4WDwith Double_Lip Design; with Magna_1625 Transfer Case; with Part Time 4WD; 2 Speed
2013GMCSierra 2500 HD4WDwith Double_Lip Design; with Magna_1626 Transfer Case; with Part Time 4WD; 2 Speed
2013GMCSierra 3500 HD4WDwith Double_Lip Design; with Magna_1626 Transfer Case; with Part Time 4WD; 2 Speed
2013GMCSierra 3500 HD4WDwith Double_Lip Design; with Magna_1226 Transfer Case; with Part Time 4WD; 2 Speed
2012ChevroletSilverado 15004WDwith Double_Lip Design; with Magna_1222 Transfer Case; with Part Time 4WD; 2 Speed
2012ChevroletSilverado 25004WDwith Double_Lip Design; with Magna_1626 Transfer Case; with Part Time 4WD; 2 Speed
2012ChevroletSilverado 25004WDwith Double_Lip Design; with Magna_1625 Transfer Case; with Part Time 4WD; 2 Speed
2012ChevroletSilverado 2500 HD4WDwith Double_Lip Design; with Magna_1226 Transfer Case; with Part Time 4WD; 2 Speed
2012ChevroletSilverado 2500 HD4WDwith Double_Lip Design; with Magna_1625 Transfer Case; with Part Time 4WD; 2 Speed
2012ChevroletSilverado 2500 HD4WDwith Double_Lip Design; with Magna_1225 Transfer Case; with Part Time 4WD; 2 Speed
2012ChevroletSilverado 2500 HD4WDwith Double_Lip Design; with Magna_1626 Transfer Case; with Part Time 4WD; 2 Speed
2012ChevroletSilverado 3500 HD4WDwith Double_Lip Design; with Magna_1226 Transfer Case; with Part Time 4WD; 2 Speed
2012ChevroletSilverado 3500 HD4WDwith Double_Lip Design; with Magna_1626 Transfer Case; with Part Time 4WD; 2 Speed
2012GMCSierra 15004WDwith Double_Lip Design; with Magna_1222 Transfer Case; with Part Time 4WD; 2 Speed
2012GMCSierra 1500AWDwith Double_Lip Design; with Magna_1222 Transfer Case; with Part Time 4WD; 2 Speed
2012GMCSierra 2500 HD4WDwith Double_Lip Design; with Magna_1225 Transfer Case; with Part Time 4WD; 2 Speed
2012GMCSierra 2500 HD4WDwith Double_Lip Design; with Magna_1226 Transfer Case; with Part Time 4WD; 2 Speed
2012GMCSierra 2500 HD4WDwith Double_Lip Design; with Magna_1625 Transfer Case; with Part Time 4WD; 2 Speed
2012GMCSierra 2500 HD4WDwith Double_Lip Design; with Magna_1626 Transfer Case; with Part Time 4WD; 2 Speed
2012GMCSierra 3500 HD4WDwith Double_Lip Design; with Magna_1626 Transfer Case; with Part Time 4WD; 2 Speed
2012GMCSierra 3500 HD4WDwith Double_Lip Design; with Magna_1226 Transfer Case; with Part Time 4WD; 2 Speed
2011ChevroletSilverado 15004WDwith Double_Lip Design; with Magna_1222 Transfer Case; with Part Time 4WD; 2 Speed
2011ChevroletSilverado 25004WDwith Double_Lip Design; with Magna_1626 Transfer Case; with Part Time 4WD; 2 Speed
2011ChevroletSilverado 25004WDwith Double_Lip Design; with Magna_1625 Transfer Case; with Part Time 4WD; 2 Speed
2011ChevroletSilverado 2500 HD4WDwith Double_Lip Design; with Magna_1226 Transfer Case; with Part Time 4WD; 2 Speed
2011ChevroletSilverado 2500 HD4WDwith Double_Lip Design; with Magna_1625 Transfer Case; with Part Time 4WD; 2 Speed
2011ChevroletSilverado 2500 HD4WDwith Double_Lip Design; with Magna_1225 Transfer Case; with Part Time 4WD; 2 Speed
2011ChevroletSilverado 2500 HD4WDwith Double_Lip Design; with Magna_1626 Transfer Case; with Part Time 4WD; 2 Speed
2011ChevroletSilverado 3500 HD4WDwith Double_Lip Design; with Magna_1226 Transfer Case; with Part Time 4WD; 2 Speed
2011ChevroletSilverado 3500 HD4WDwith Double_Lip Design; with Magna_1626 Transfer Case; with Part Time 4WD; 2 Speed
2011GMCSierra 15004WDwith Double_Lip Design; with Magna_1222 Transfer Case; with Part Time 4WD; 2 Speed
2011GMCSierra 1500AWDwith Double_Lip Design; with Magna_1222 Transfer Case; with Part Time 4WD; 2 Speed
2011GMCSierra 2500 HD4WDwith Double_Lip Design; with Magna_1225 Transfer Case; with Part Time 4WD; 2 Speed
2011GMCSierra 2500 HD4WDwith Double_Lip Design; with Magna_1226 Transfer Case; with Part Time 4WD; 2 Speed
2011GMCSierra 2500 HD4WDwith Double_Lip Design; with Magna_1625 Transfer Case; with Part Time 4WD; 2 Speed
2011GMCSierra 2500 HD4WDwith Double_Lip Design; with Magna_1626 Transfer Case; with Part Time 4WD; 2 Speed
2011GMCSierra 3500 HD4WDwith Double_Lip Design; with Magna_1626 Transfer Case; with Part Time 4WD; 2 Speed
2011GMCSierra 3500 HD4WDwith Double_Lip Design; with Magna_1226 Transfer Case; with Part Time 4WD; 2 Speed