BMW , 5 Series , E12 , 520 (1972-1977) Little Known Facts
- Engine Variations: The E12 520 was available with three engine options: M118 (1592cc), M117 (2565cc) and B31 (2494cc diesel).
- Transmission Choices: Buyers could select from four-speed manual, five-speed Getrag transmission, or a four-speed automatic.
- Wheels and Tires: The 520 came with 14-inch steel wheels as standard, but an optional alloy wheel package was available, featuring 7Jx14-inch 'Telefon' alloys.
- Brake Upgrades: In the mid-1970s, BMW offered a high-performance braking package, which included larger rotors and calipers for improved stopping power.
- Suspension Tweaks: The 520 received a revised rear axle design in 1976, featuring a more efficient transverse leaf spring arrangement.
- Interior Upgrades: The 1974 facelift introduced new interior trim options, including a walnut wood veneer dashboard and 'Nappa' leather upholstery.
- Air Conditioning: Air conditioning became available as an optional extra from the 1975 model year onwards.
- Safety Features: The E12 520 was equipped with dual-circuit brakes and front disc brakes as standard, while rear disc brakes were also available on certain trim levels.
- Engine Oil Capacity: The M117 engine required a significantly higher oil capacity than its predecessors, necessitating the use of a larger oil reservoir.
- Differential Ratios: Various final drive ratios were offered to suit different driver preferences and driving conditions.
- M-Performance Upgrades: In period, some 520s received performance upgrades from BMW's M-division, including engine tuning, exhaust system modifications, and suspension enhancements.
- Production Numbers: A total of approximately 245,000 E12 520 units were produced during the 1972-1977 lifespan.
- Early Special Editions: In 1973, a limited run of 'Special' model 520s was produced, featuring unique interior trim and exterior paint colors.
- Import Market Variations: The 520 was sold in various international markets with different engine options and specifications.
- Restoration Parts Availability: Due to the age and relatively low production numbers of the E12 520, original parts can be challenging to find and may require sourcing from specialized suppliers or period-specific restorers.
- Rally Heritage: A number of 520s were prepared for rally competition during the mid-to-late 1970s, with notable successes in European events such as the Paris-Dakar Rally.
- Classic Car Values: Early E12 520 models have experienced a moderate increase in value over recent years among classic car enthusiasts and collectors.
- Service Manual Availability: BMW has released various service manuals for the E12 520, which can be sourced from online archives or period-specific restorers.
- Original Color Palette: The original color palette for the E12 520 included a range of metallic and non-metallic colors, such as 'Dutch Blue' (Lodenblau).
- Rare Options: Some rare options were available on certain trim levels, including sunroofs, cigar lighters, or unique interior fabrics.
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