Description:

STANT SO‑61 — OIL FILLER CAP

Type: Oil Filler / Breather Cap

Brand: Stant

Style: Push‑on, vented

Era: 1960s–1970s domestic vehicles

This cap is part of Stant’s long‑running SO‑series, which covered oil filler caps for American engines before the modern locking/PCV‑specific era.

SO‑61 is a vented push‑on cap, used on a wide range of GM, Ford, and Chrysler engines.

🚗 FITMENT (Typical Applications)

SO‑61 was used across many domestic engines with 1.22"–1.25" valve cover necks.

CHEVROLET (1960s–1970s)

• 194 / 230 / 250 / 292 I6

• 283 / 307 / 327 / 350 small‑block

• Light trucks and vans

FORD (select 1960s models)

• 144 / 170 / 200 / 250 I6

• Early small‑block V8s with push‑on caps

CHRYSLER (limited)

• Some 225 Slant‑6 applications

COMMON USES

• Valve cover oil filler opening

• Breather cap for open‑vent PCV systems

• Replacement for GM 3.028‑group caps (non‑locking)

📘 SPECIFICATIONS

• Type: Vented oil filler cap

• Fitment: Push‑on

• Neck size: ~1.22–1.25"

• Material: Stamped steel with internal mesh

• Finish: Typically zinc or painted