OER® reproduction of the original radiator overflow jar cap. This is a vented cap manufactured from injection molded material that includes the seal and features the words "ENGINE COOLANT ONLY" in the original font and color.
Applications: Buick:
You are assured that every OER® part offered is manufactured to exact specifications and will fit and function just like the original part. What's more, most OER® products are officially licensed and carry a full 1 year warranty against defects and workmanship. Far above most other manufacturers of restoration products, the OER® symbol denotes the finest restoration products on the market. Look for the OER® symbol before buying your restoration parts.
OER® was established in the early 1980's to manufacture original equipment reproductions where every part is meticulously reproduced to exact factory specifications. All OER® parts are reverse engineered or manufactured using original blueprints when available to ensure the closest possible reproduction available on the market. When available, original factory tooling is utilized to insure complete originality. Our mission is to supply the highest quality parts available for the enthusiast and serious restorer. Whether you're a serious restorer, or just someone who wants a replacement part for your classic vehicle, OER® is the source for the finest quality parts on the market. Today, OER® is the most recognized brand in automotive restoration parts. Choose OER® for all your restoration needs.
Many OER® products are officially licensed by General Motors and the Chrysler Group ensuring the quality and authenticity of these products. The GM Restoration Parts logo and the MOPAR Authentic Restoration Product logo are the true signs of quality. OER® is licensed by GM and the Chrysler Group as an official restoration parts manufacturer.
| Make | Model | Years |
| Buick | Century | 1977 - 1980 |
| Buick | Electra | 1977 - 1980 |
| Buick | LeSabre | 1977 - 1999 |
| Buick | Regal | 1982 - 1987 |
| Buick | Riviera | 1979 |
| Buick | Skylark | 1980 - 1985 |
| Chevrolet | Astro | 1985 - 1996 |
| Chevrolet | Blazer | 1987 - 1996 |
| Chevrolet | C10 Suburban | 1978 - 1986 |
| Chevrolet | C10 | 1978 - 1986 |
| Chevrolet | C1500 Suburban | 1992 - 1996 |
| Chevrolet | C1500 | 1988 - 1996 |
| Chevrolet | C15 | 1982 - 1988 |
| Chevrolet | C20 Suburban | 1978 - 1986 |
| Chevrolet | C20 | 1978 - 1987 |
| Chevrolet | C2500 Suburban | 1992 - 1996 |
| Chevrolet | C2500 | 1988 - 1996 |
| Chevrolet | C30 | 1978 - 1986 |
| Chevrolet | C3500 | 1988 - 1996 |
| Chevrolet | C35 | 1983 - 1996 |
| Chevrolet | Camaro | 1978 - 1992 |
| Chevrolet | Caprice | 1977 - 1990 |
| Chevrolet | Celebrity | 1982 - 1990 |
| Chevrolet | Chevette | 1979 - 1987 |
| Chevrolet | Citation | 1980 - 1983 |
| Chevrolet | Corvette | 1977 - 1982 |
| Chevrolet | El Camino | 1978 - 1987 |
| Chevrolet | G10 | 1979 - 1995 |
| Chevrolet | G20 | 1979 - 1995 |
| Chevrolet | G30 | 1979 - 1996 |
| Chevrolet | Impala | 1977 - 1985 |
| Chevrolet | K10 Suburban | 1978 - 1986 |
| Chevrolet | K10 | 1978 - 1986 |
| Chevrolet | K1500 Suburban | 1992 - 1996 |
| Chevrolet | K1500 | 1988 - 1996 |
| Chevrolet | K20 Suburban | 1978 - 1986 |
| Chevrolet | K20 | 1978 - 1986 |
| Chevrolet | K2500 Suburban | 1992 - 1996 |
| Chevrolet | K2500 | 1988 - 1996 |
| Chevrolet | K30 | 1978 - 1986 |
| Chevrolet | K3500 | 1988 - 1996 |
| Chevrolet | K5 Blazer | 1978 - 1986 |
| Chevrolet | Malibu | 1978 - 1983 |
| Chevrolet | Monte Carlo | 1978 - 1988 |
| Chevrolet | Monza | 1978 - 1980 |
| Chevrolet | P10 | 1979 - 1980 |
| Chevrolet | P20 | 1979 - 1989 |
| Chevrolet | P30 | 1979 - 1994 |
| Chevrolet | R10 Suburban | 1987 - 1988 |
| Chevrolet | R10 | 1987 |
| Chevrolet | R1500 Suburban | 1989 - 1991 |
| Chevrolet | R20 Suburban | 1987 - 1988 |
| Chevrolet | R20 | 1987 - 1988 |
| Chevrolet | R2500 Suburban | 1989 - 1991 |
| Chevrolet | R2500 | 1989 |
| Chevrolet | R30 | 1987 - 1988 |
| Chevrolet | R3500 | 1989 - 1991 |
| Chevrolet | S10 Blazer | 1983 - 1994 |
| Chevrolet | S10 | 1982 - 1996 |
| Chevrolet | Silverado | 1995 - 1996 |
| Chevrolet | Suburban 1500 | 1995 - 1996 |
| Chevrolet | Suburban | 1987 - 1994 |
| Chevrolet | Tahoe | 1995 - 1996 |
| Chevrolet | Tracker | 1989 - 1991 |
| Chevrolet | V10 Suburban | 1987 - 1988 |
| Chevrolet | V10 | 1987 |
| Chevrolet | V1500 Suburban | 1989 - 1991 |
| Chevrolet | V20 Suburban | 1987 - 1988 |
| Chevrolet | V20 | 1987 |
| Chevrolet | V2500 Suburban | 1989 - 1991 |
| Chevrolet | V30 | 1987 - 1988 |
| Chevrolet | V3500 | 1989 - 1991 |
| GMC | Astro | 1985 - 1988 |
| GMC | C15 Suburban | 1978 |
| GMC | C1500 Suburban | 1979 - 1996 |
| GMC | C1500 | 1979 - 1996 |
| GMC | C15 | 1978 |
| GMC | C25 Suburban | 1978 |
| GMC | C2500 Suburban | 1979 - 1996 |
| GMC | C2500 | 1979 - 1996 |
| GMC | C25 | 1978 |
| GMC | C3500 | 1979 - 1996 |
| GMC | C35 | 1978 |
| GMC | Caballero | 1978 - 1987 |
| GMC | Jimmy | 1978 - 1996 |
| GMC | K15 Suburban | 1978 |
| GMC | K1500 Suburban | 1979 - 1996 |
| GMC | K1500 | 1979 - 1996 |
| GMC | K15 | 1978 |
| GMC | K25 Suburban | 1978 |
| GMC | K2500 Suburban | 1979 - 1996 |
| GMC | K2500 | 1979 - 1996 |
| GMC | K25 | 1978 |
| GMC | K3500 | 1979 - 1996 |
| GMC | K35 | 1978 |
| GMC | R1500 Suburban | 1987 - 1991 |
| GMC | R1500 | 1987 |
| GMC | R2500 Suburban | 1987 - 1991 |
| GMC | R2500 | 1987 - 1989 |
| GMC | R3500 | 1987 - 1991 |
| GMC | S15 Jimmy | 1983 - 1991 |
| GMC | S15 | 1982 - 1990 |
| GMC | Safari | 1985 - 1989 |
| GMC | Sonoma | 1991 - 1996 |
| GMC | Syclone | 1991 |
| GMC | Tracker | 1989 - 1991 |
| GMC | Typhoon | 1992 - 1993 |
| GMC | V1500 Suburban | 1987 - 1991 |
| GMC | V1500 | 1987 |
| GMC | V2500 Suburban | 1987 - 1991 |
| GMC | V2500 | 1987 |
| GMC | V3500 | 1987 - 1991 |
| GMC | Yukon | 1992 - 1996 |
| Oldsmobile | 98 | 1976 - 1990 |
| Oldsmobile | Cutlass Ciera | 1982 - 1993 |
| Oldsmobile | Cutlass | 1976 - 1981 |
| Oldsmobile | Delta 88 | 1976 - 1990 |
| Oldsmobile | Omega | 1976 - 1984 |
| Oldsmobile | Toronado | 1979 |
| Pontiac | 6000 | 1982 - 1991 |
| Pontiac | Bonneville | 1977 - 1990 |
| Pontiac | Catalina | 1977 - 1981 |
| Pontiac | Fiero | 1984 - 1988 |
| Pontiac | Firebird | 1982 - 1992 |
| Pontiac | Grand Am | 1978 - 1980 |
| Pontiac | Grand Prix | 1982 - 1989 |
| Pontiac | LeMans | 1978 - 1981 |
| Pontiac | Parisienne | 1983 - 1986 |
| Pontiac | Phoenix | 1980 - 1984 |
| Pontiac | Safari | 1987 - 1989 |
| Pontiac | T1000 | 1982 - 1986 |
| Pontiac | Ventura | 1976 - 1977 |
