7 products about 1991 Buick Riviera Crankshafts, Pistons, Rings & Connecting Rods foundFITS YOUR VEHICLE Product Specifications Notes: with 0.721in Overall Length;Standard Size; A-Series aluminum bearings Housing Bore Max: 60.312 Housing Bore Min: 60.300 Oil Clearance Max: 0.076 Oil Clearance Min: 0.0007" Overall Length Max: 18.310 Package Alert: Pair Part Material: A-Series Aluminum Size: Standard Standard Shaft Max: 2.2495" Standard Shaft Min: 2.2487" UPC: 614046738232 Wall Thickness Max: 0.0619" Part Description: Aluminum Connecting Rod Bearing Set More Info FITS YOUR VEHICLE Product Specifications UPC: 724956213450 Part Description: Transfer Case Output Shaft Repair Sleeve FITS YOUR VEHICLE Product Specifications Flanged Outside Diameter: 56.360 mm Installation Depth: 1.000" Material: Stainless Steel Overall Width: 17.480 mm Shaft Size Maximum: 1.940" Shaft Size Minimum: 49.120 mm Width on Shaft: 14.300 mm Part Description: Front Crankshaft Repair Sleeve More Info FITS YOUR VEHICLE Product Specifications Notes: Use w/E-532K ring set; Standard Size; Hypereutectic; 3 Ring Groove Piston; Ring Groove Widths: 1.50, 1.50, 3.00 (mm); 1.377 CD; Recessed Head .260 deep x 3.050 dia. - 8.5:1 C.R. Bore: 3.8000" Compression Distance: 1.377 Head Illustration: 28 Head Type: Recessed Head .260 deep x 3.050 dia. - 8.5:1 C.R. Minimum Clearance: 0.001 @ 1.710 from top of head Part Material: Hypereutectic Pin Diameter: 0.9054" Pin Offset: 0.02" Ring 1 Qty: 2 Ring 1 Width: 1.50mm Ring 2 Qty: 1 Ring 2 Width: 3.00mm UPC: 724956308460 Weight W Pin Gram: 00531.+/- 10. Part Description: Piston More Info FITS YOUR VEHICLE Product Specifications Item Dimensions: 9.3 x 8.5 x 6.3 inches Item Weight: 10.30 Pounds Fitment Type: Direct Replacement Replaces: 24501201 Part Description: Balancer Asm, Crankshaft More Info FITS YOUR VEHICLE Product Specifications Other Names: Crankshaft Pulley, Pulley Item Dimensions: 9.3 x 8.2 x 6.1 inches Item Weight: 8.20 Pounds Fitment Type: Direct Replacement Replaces: 25535485 Part Description: Balancer Asm, Crankshaft More Info FITS YOUR VEHICLE Product Specifications Notes: All Models Part Description: Crankshaft Seal