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Photo of French Locks, 1964-66 GS-400/Riviera
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French Locks, 1964-66 GS-400/Riviera

Part# : S230166
Sold As: Each
Ship Size: Standard
Price Match: Eligible
$5.49
List Price: $6.95
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Vehicle Specific View fitment for 2 models
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Just like the originals

Make sure your 1964-66 exhaust manifold bolts don't loosen up, due to expansion and contraction, by using these stainless steel French locks. The 1964-66 GS400 requires six of part# S230165 and four of part# S230166, while all other models use part# S230166, as required.

Find Item In These Catalogs

  • 2025 Riviera 1963-76 121
  • 2025 Skylark, GS & GSX 61-72 212
WARNING: This product can expose you to chemicals including lead, sulfur, nickel, chromium, vanadium, titanium, polyvinyl chloride, and 4,4’-methylenebis (2-chloroaniline), which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Vehicle Fitment

Year Make Model Application Details
1963–1966 Buick Riviera single
1964–1966 Buick Skylark  
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French Locks, 1964-66 GS-400/Riviera
French Locks, 1964-66 GS-400/Riviera