Hi Mike, I'm glad to assist you. It is pre-filled with oil. But manufacturers recommend that you drain the "shipping oil" and refill with "proper PAG oil" (and standard amount) upon installation. The other purpose of the added oil is to protect the compressor during its stay on the dealer's shelves, retailers' stores, and in the course of transport. Once installed on your vehicle, that is when you will start to begin the a/c charging process. Have it done by a certified mechanic or by your trusted local repair shop. Grab our price-cut offer and click the link below to buy it today. Happy shopping! https://www.carparts.com/a-c-compressor/gpd/gpd6512979?can=cpje1043_CSQA_20231019

Hi Chongpheng, thank you for reaching out. Per checking, we don't offer the a/c clutch for this item separately. You can use this link to continue ordering this part at a discounted price today: https://www.carparts.com/a-c-compressor/gpd/gpd6512979?can=CPAP3648_CSQA_20230701 I hope this helps. Enjoy shopping.

Hi Winston, thank you for reaching out. No, this does not. The gaskets and seals are sold separately. You can use this link to continue ordering the part at a discounted price today: https://www.carparts.com/a-c-compressor/gpd/gpd6512979?can=CPAP3648_CSQA_20230429 I hope this helps. Happy shopping.

Hi James, thank you for reaching out. No, it does not. This item comes pre-oiled. You can use this link to go back to the item page and continue the order: https://www.carparts.com/a-c-compressor/gpd/gpd6512979?can=CPAP3648_20220703 I hope this helps. Happy shopping.

Hi Patrick, I'm glad to assist you. Yes, this a/c compressor assembly comes complete with the clutch already. Click the link below to order today and grab our discounted promo price offer (32% less already), which also comes with a 30-day post-purchase price match guarantee. I hope this helps. Happy shopping. https://www.carparts.com/a-c-compressor/gpd/gpd6512979?can=CPJE1043_20220609