SBF Oil Pan Stud Kit Bolts Stainless Steel Small Block 289 302 351W 5.0L - Bolt kit for Installing Oil Pan to Block - Fitment: Fits 260, 289, 302, 351 Windsor Engines (Including 5.0L); Fits Most OEM & Aftermarket Stamped Steel & Aluminum Oil Pans; Will Not Fit: Aluminum Oil Pans With One-Piece Fel-Pro Gaskets; Will Not Fit: Ford 4.6, 5.4L Modular Engines. - Specifications:Hardened 304 Stainless Steel; (18) 1/4" x 1 1/4" Studs (polished); (18) 1/4" Hex Locking Flange Nuts (polished); (4) 5/16" x 1 1/4" Studs (polished); (4) 5/16" Hex Locking Flange Nuts (polished).