LowPricedAutoParts Engine Re-Ring Kit for 1991 Buick Oldsmobile Pontiac 3.8L 3800 V6 - Premium Rings Standard Size

Restore compression and reduce oil consumption in your 1991 Buick, Oldsmobile, or Pontiac 3.8L 3800 V6 with this targeted Re-Ring kit from LowPricedAutoParts. Designed specifically for the popular L27 and LN3 naturally aspirated OHV engines found in models like the Bonneville, LeSabre, Park Avenue, Regal, Riviera, Toronado, 98, Reatta, and matching Olds/Pontiac variants, this kit addresses common ring wear issues that lead to blow-by, power loss, and blue smoke without the expense of a full rebuild. The premium piston rings deliver enhanced sealing and longevity compared to standard options – perfect for reliable daily driving or family transportation. Combined with quality rod bearings, main bearings, and a complete full gasket set, everything you need for a focused top-end refresh is included. All components are offered in standard size for stock bores and journals – no machining needed if your engine measures within factory specs. This kit is offered with standard size rings and bearings for engines that do not require machining – ideal for low-to-moderate mileage rebuilds where bores and journals remain in spec. If oversized rings or undersized bearings are needed due to wear or prior machining, simply reach out with your measured dimensions; we'll confirm availability and get you the exact match to complete your project right. Always verify clearances during assembly (e.g., piston-to-wall typically 0.002–0.004" and bearing specs per manufacturer recommendations) for optimal performance and longevity. Verify your exact engine code and VIN before ordering. LowPricedAutoParts is committed to providing the right parts with reliable customer support—message us your measurements or any fitment questions for fast, expert assistance. Get your classic GM 3.8L running smooth and strong again!

• Re-Ring kit for 1991 Buick, Oldsmobile, Pontiac 3.8L 3800 231 V6 OHV engines (L27 | LN3 engine codes; naturally aspirated, distributorless ignition; verify VIN/engine code for compatibility)
• Fits key 1991 models including Buick 98, Bonneville, LeSabre, Park Avenue, Reatta, Regal, Riviera, Toronado and equivalent Oldsmobile/Pontiac applications
• Includes premium piston rings (upgraded design for superior sealing, heat resistance, and durability in daily-driven applications), rod bearings, main bearings, and full gasket set
• Standard size throughout: premium piston rings (available in STD, .020, .030, .040, .060 oversizes), rod bearings (STD, .010, .020, .030 undersizes), main bearings (STD, .010, .020, .030 undersizes) – ideal for stock bore/journal dimensions with no initial machining required
• Oversize/undersize bearings or rings available on request – message us with measured bore diameter and crank journal sizes before ordering for confirmation and perfect match
• Professional engine machining and assembly strongly recommended – verify cylinder bore roundness, crank journals, and clearances (typical piston-to-wall ~0.002–0.004", bearing clearances) – not a drop-in for heavily worn engines without proper blueprinting
• Premium-quality parts by Enginetech – message us for fitment verification, size options, premium ring upgrade details, VIN checks, or any 1991 3.8L 3800 questions; LowPricedAutoParts delivers fast, expert support every step of the way