GM 4T65E 2nd Clutch Drum Large Hole Loaded No Oil Groove Impala Grand Prix

GM 4T65E 2nd Clutch Drum Large Hole Loaded No Oil Groove Impala Grand Prix

Used OEM unit pulled from an inspected donor transmission, cleaned and visually inspected before listing. Photos show a representative unit of this exact part and variant — see the fitment and casting notes below to confirm your match.

• SKU: G-4T65E-DR-U-01
• Includes: You receive one used GM 4T65E second clutch drum (2nd clutch housing) in the LARGE HOLE, NO OIL GROOVE configuration, sold LOADED — that is, the housing complete with its second clutch pack (6-clutch), the 2nd clutch apply piston, the return spring assembly, and the retaining/snap rings and hub sealing rings as removed from a core unit. NOT INCLUDED: the reverse reaction shell, the input drum, the driven sprocket support, and any new soft parts.
• Warranty: 30-day return-or-replace after delivery
• Shipping: UPS Ground from our Tennessee warehouse, 2 business day handling

OEM / interchange references (verify against your casting/tag):

• 84552GA

Fits (engine/year matters — read carefully): This is the six-clutch second-clutch drum for the GM 4T65E four-speed front-wheel-drive transaxle (RPO MN3, MN7, M15, M76), cataloged by Whatever It Takes as "97-Up" — critically, BOTH 4T65E drum versions are cataloged as 97-Up, so the large-hole/no-groove and small-hole/deep-groove drums are a running design variation, not a year split.

Important: Before you order, pull your old second clutch drum and check three things. (1) THE OIL GROOVE — look at the hub of the drum where the two sealing rings ride. Between the two ring lands, is there a deep machined groove cut all the way around? This drum has NO groove: the surface between the ring lands is plain and smooth. If your old drum has that deep groove between the rings, this is the WRONG drum. (2) THE HOLE — this is the LARGE-hole version. Compare the lube hole in the center bore against your old drum; Buffalo splits the two 4T65E drums by hole size, large versus small, so a small-hole core needs the other part. (3) THE REVERSE REACTION SHELL — these are a matched set. Whatever It Takes pairs the 1st-design reverse reaction shell (84624B) with the no-oil-groove drum, and the 2nd-design shell (84624GA) with the deep-oil-groove drum. If you change drum designs you must change the reverse reaction shell to match; mixing designs will not work.

Before you order: confirm your transmission code and casting/part numbers. Not sure? Message us through eBay with your VIN or transmission tag and we will confirm fitment the same business day. Rebuilder shops — ask about volume pricing. We stock transmission hard parts by family and can hold inventory for scheduled builds.