Automobile engines are usually painted bright colors, like red, orange or blue. This just isn’t for appearance. There is a practical purpose. Bright colors enable leaks to be spotted easily.
Here is a list of engine colors (and paint codes) used by Mopar, from 1962 to 1971.
Race Hemi Orange- Mopar P4120751

1970 426
Turquoise- Mopar P4120752 (Medium blue-green color)

1969-340
Red- Mopar P4349218
Late 1960s Poly 318 engines and 225 Slant 6 engines

1964 273
Blue- Mopar P4349217
· 1972-1983 All production engines except the 2.2
· 1969-1972 LA 318s
· 1969 340s

1970 440
In 2008, Dodge decided to resurrect the Hemi-orange color for the 6.1 liter block of the retro-inspired Dodge Challenger. This paint color was carried through in later model years, including the 6.2 liter supercharged Hellcat engines.

2008 6.1

2015 6.2
Here is a list of engine colors (and paint codes) used by Mopar, from 1962 to 1971.
Race Hemi Orange- Mopar P4120751
- 1962-1964 Max Wedge engines (413 and 426 Cross Ram)
- 1964-1965 426 Race Hemis
- 1966-1971 426 Street Hemis
- 1969-1971 High performance 383 and 440 engines
- 1970-1971 340 engines

1970 426
Turquoise- Mopar P4120752 (Medium blue-green color)
- 1962-1971 All B/RB big blocks.
- 1969 LA 340s.

1969-340
Red- Mopar P4349218
Late 1960s Poly 318 engines and 225 Slant 6 engines
- 1964-1969 All 273 engines
- 1967-1969 LA 318s
- 1968 340s

1964 273
Blue- Mopar P4349217
· 1972-1983 All production engines except the 2.2
· 1969-1972 LA 318s
· 1969 340s

1970 440
In 2008, Dodge decided to resurrect the Hemi-orange color for the 6.1 liter block of the retro-inspired Dodge Challenger. This paint color was carried through in later model years, including the 6.2 liter supercharged Hellcat engines.

2008 6.1

2015 6.2