1965-66 Impala & Caprice Rear Quarter Window Seals: Which One Fits Your Body Style
If you've searched "1965-66 Impala rear quarter window seal" and found more than one listing, you're not seeing duplicates — you're seeing three genuinely different parts for three different body styles. Ordering by year alone isn't enough on this one; the body style is what actually determines fit. Here's the real breakdown, straight from our catalog.
4-Door Hardtop
If your car is a 4-door hardtop (no B-pillar between the front and rear side glass), you need the 4 Door Hardtop Rear Quarter Window Seal Set — this is the version sized for that body style's quarter window opening.
Fastback (2-door)
The 2-door fastback roofline is its own shape, and its quarter window seal is sized differently from either hardtop version. If your car is a 2-door fastback, look for the Fastback Rear Quarter Window Seal Set specifically — a hardtop or convertible seal will not match this roofline's opening.
2-Door Hardtop / Convertible
2-door hardtops and convertibles share a quarter window opening size and use the 2DR Hardtop/Convertible Rear Quarter Window Seal Set — one part covers both roof configurations on this body style.
How to tell which one you have, before you order
- Count the doors. 4-door hardtop is its own category — if your car has four doors, that's your answer regardless of roof style.
- On a 2-door car, look at the roofline. A fastback's roof slopes down toward the trunk in one continuous line; a hardtop/convertible has a more upright, formal rear window and trunk line.
- When in doubt, measure the old seal or the opening before ordering — or send us a photo of the quarter window area and we'll help confirm before you buy.
This applies specifically to the 1965 and 1966 model years across Impala, Caprice, and Bel Air/Biscayne badge variants sharing this body — always double check your exact year and body style against the listing description before ordering, since GM changed roof and window shapes across other years in this era.