Description:

GM 3843698 — CAP (Oil Filler / Breather Cap)

Group 3.028 — Engine Oil Filler / Crankcase Ventilation

Genuine GM Parts 3843698 GR. 3.028 CAP

• Oil filler caps

• Breather caps

• Crankcase ventilation caps

• Valve cover oil caps

3843698 is an OEM GM oil filler/breather cap used on mid‑1960s Chevrolet engines.

📘 Part Overview

• GM Part Number: 3843698

• Group: 3.028

• Nomenclature: Cap – Oil Filler / Breather

• Material: Stamped steel with internal filter mesh

• Finish: Typically black or zinc‑coated depending on application

• Era: Mid‑1960s

🚗 Fitment Chart (Confirmed GM Usage)

This cap was used across Chevrolet engines during the mid‑1960s, especially:

Chevrolet Small‑Block V8

• 283

• 327

• 350 (early)

Chevrolet Inline‑6

• 194

• 230

• 250

• 292

Typical Applications

• Valve cover oil filler opening

• Crankcase breather cap

• Closed or open PCV systems depending on model year

This cap appears on:

• Passenger cars

• Light trucks

• Vans

• Industrial engines