[Vehicle Fitment-1]: Compatible with Chevrolet Silverado 2500 HD 2011-2015/2021, Silverado 2500 HD 2016-2019 (Crew/ Extended/ Standard Cab Pickup; without NV8), Silverado 2500 HD 2020 (Extended Cab Pickup; without NV8), Silverado 3500 HD 2011-2015/2021, Silverado 3500 HD 2016-2019 (Crew/ Extended/ Standard Cab Pickup; without NV8), Silverado 3500 HD 2020 (Extended Cab Pickup; without NV8) --- For Left Hand Drive Only [Vehicle Fitment-2]: Compatible with Chevrolet Sierra 2500 HD 2011-2015/2021-2022, Sierra 2500 HD 2016-2019 (Crew/ Extended/ Standard Cab Pickup; without NV8), Sierra 2500 HD 2020 (Extended Cab Pickup; without NV8), Sierra 3500 HD 2011-2015/2021-2022, Sierra 3500 HD 2016-2019 (Crew/ Extended/ Standard Cab Pickup; without NV8), Sierra 3500 HD 2020 (Extended Cab Pickup; without NV8) --- For Left Hand Drive Only [Reference Number]: 27-7675, 277675, 1426, 19256662, 19257732, 19330691, 22845815, 22923379, 23130417, 23453443 [Specification]: ①Condition: New; ②Input Shaft Diameter: 0.79 in; ③Output Shaft Diameter: 1.63 in; ④Pressure Port Thread Size: M18 x 1.5; ⑤Return Port Thread Size: M16 x 1.5; ⑥Total Turns Lock To Lock: 3.5; ⑦Input Shaft Spline Quantity: 0; ⑧Output Shaft Spline Quantity: 48 [Buy with Confidence]: A-Premium offers a one-year unlimited-mileage guarantee on our meticulously crafted gear box. We offer a wide variety of automotive accessory categories, ensuring that you can hit the road with peace of mind A-premium Power Steering Gear Boxes are an ideal choice to replace your broken Power Steering Gear Boxes. All Power Steering Gear Boxes meet or exceed OEM specifications. Due to high manufacturing standard, it will come with one year quality guarantee. Compatible with Chevrolet Models: Silverado 2500 HD 2011-2015 Silverado 2500 HD 2016-2019 Crew/Extended/Standard Cab Pickup; without NV8 Silverado 2500 HD 2020 Extended Cab Pickup; without NV8 Silverado 3500 HD 2011-2015 Silverado 3500 HD 2016-2019 with SRW; without NV8 Silverado 3500 HD 2020 Extended Cab Pickup; without NV8 Compatible with GMC Models: Sierra 2500 HD 2011-2015 Sierra 2500 HD 2016-2019 Crew/ Extended/ Standard Cab Pickup; without NV8 Sierra 2500 HD 2020 without NV8 Sierra 3500 HD 2011-2015 Sierra 3500 HD 2016-2019 with SRW; without NV8 Sierra 3500 HD 2020 without NV8 Product Specifications: Casting Material: Steel/Aluminum Color: Black Pressure Port Thread Size: M18 x 1.5 Pressure Port ID Size: 0 mm Input Shaft Diameter (in): 0.66 inch Output Shaft Diameter (in): 1.63 inch Number of Mounting Holes: 3 Return Port Thread Size: M16 x 1.5 OEM Number: 27-7675, 19256662, 19257732, 22845815, 22923379 Quantity Sold: One Piece