Coolant air bleed pipe and cover bolt

Notes

Catalog PN: GM 11516480 per figure GM00-565 callout 321 and 302 — "BOLT,W/PMP INL(M6X1X25-10MM SOC)(ACDelco #15-75247) — Required: 02, Y 6.2W(LS3) (2008-2011). M6x1.0 thread, 25mm long, 10mm socket head. Used for water pump inlet (which is the LS3 coolant bleed/inlet area)." length_mm lifted into the structured field on 2026-06-04 from the GM parts descriptor already quoted above (M6X1X25); the third number is the bolt length in mm. Cross-checked against the chevrolet-parts-canada parts catalog (captured 2026-05-28), whose blocked detail pages and callout-only diagrams do not separately state this length, so the value rests on the GM Professional Parts Catalog descriptor.