8 Fairfax St SE
NAPA Auto Parts Genuine Parts Company
8 Fairfax St SE
Leesburg,  VA  20175
(703) 777-2055
Reserve Online Participant
Store Hours
Mon-Fri:7:30 AM-7:00 PM
Sat:8:00 AM-5:00 PM
Sun:9:00 AM-5:00 PM
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Block Sealer & Head Gasket Repair Universal Products / BlueDevil 16 fl oz

Block Sealer & Head Gasket Repair Universal Products / BlueDevil 16 fl oz

Part #: NCB 00209
Line: NAPA Consumer Brands

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Features & Benefits

Warranty: Standard : 30 Days


Formulated for the do-it-yourself customer who has limited time or not mechanically inclined. Intended for customers seeking single repairs 4 or 6 cylinder engines. Permanently repair head gaskets, heater cores, freeze plugs & cooling leaks.

  • Permanent leak repair and sealant for head gaskets, heater cores, freeze plugs and cooling system leaks
  • Made in the USA
  • Contains no solid or particulate matter that can harm a vehicles engine
  • ASTM D1881 & ASTM D3147 Compliant


Brand NAPA
Container Size 16 fl oz (US)
Volatile Organic Compound (VOC) Rating 0 VOC
Contains VOCs No
Manufacturer Universal Products / Blue Devil
VMRS Code 053999003
Stop Leak Application 4 & 6 Cylinder Engines
SDS Required Yes

Safety Information

Vehicle Fitment Guide

Product Reviews