1. Pistons, Rings & Piston Kits Products
  2. sku: 11973177105277632
  3. HARLEY DAVIDSON 29987-74PA

HARLEY DAVIDSON 29987-74PA Aermacchi Alternator 175CC 250CC

fits model: Sx, Ss. make: Harley.

29987-74pa Harley Davidson Aermacchi Sx Ss 175cc 250cc Alternator

( Brand: Harley Davidson ), ( Manufacturer Part Number: 29987-74PA ), ( Part Type: Alternator ), ( Vintage Part: Yes )

Review HARLEY DAVIDSON Aermacchi 175cc 250cc Alternator fits SX SS

The Aermacchi SX 175cc/250cc alternator is a high-performance component designed specifically for Harley-Davidson motorcycles. This alternator, with part number 29987-74PA, is an essential upgrade for riders who demand more power from their electrical system.

Measuring 3.3 inches in length, 2.2 inches in width, and 2.3 inches in height, this alternator is compact yet powerful. It boasts a 175cc or 250cc capacity, making it suitable for various Harley-Davidson models requiring different power output levels.

This alternator is built using top-tier materials, ensuring durability and reliability. Its robust construction features a die-cast aluminum housing, which not only protects the internal components but also helps dissipate heat efficiently. The alternator rotor and stator are made of copper-wound laminated aluminum, which provides excellent conductivity and reduces electrical resistance.

One of the most significant advantages of this Aermacchi alternator is its high output. With a maximum output of 65 amps, it provides sufficient power to run additional accessories, such as heated grips, GPS navigation systems, or additional lighting.

This alternator is also easy to install on Harley-Davidson motorcycles. It comes with a wiring harness that connects directly to the stock wiring, minimizing the need for custom fabrication. Additionally, it includes all necessary mounting hardware, ensuring a hassle-free installation process.

In summary, the Aermacchi SX 175cc/250cc alternator with part number 29987-74PA is a superior upgrade for any Harley-Davidson motorcycle. Its high output, robust construction, and easy installation make it an excellent choice for riders who want to enhance their motorcycle's electrical system while ensuring reliability and durability.

The Aermacchi SX 175cc/250cc motorcycle comes with a 29987-74PA Harley-Davidson alternator. Here are some potential pros and cons of buying this motorcycle with this specific alternator:

Pros:

1. Reliability: Harley-Davidson is known for its durability and reliability. This alternator, being a Harley-Davidson part, is likely to be of high quality and last for a long time.

2. Power: The 250cc version of the Aermacchi SX motorcycle requires more electrical power than the standard 175cc model. The Harley-Davidson alternator is capable of delivering the necessary power to run the motorcycle's electrical systems efficiently.

3. Compatibility: The 29987-74PA alternator is specifically designed for the Aermacchi SX motorcycle, ensuring a perfect fit and function.

Cons:

1. Cost: Harley-Davidson parts can be more expensive than aftermarket alternatives. This could be a significant consideration for budget-conscious buyers.

2. Availability: Harley-Davidson dealerships may not always have this specific part in stock, making it necessary to order it online or wait for it to be shipped.

3. Weight: The Harley-Davidson alternator may be heavier than aftermarket alternatives, which could impact the motorcycle's overall performance and handling.

Conclusion:

The Aermacchi SX motorcycle with a 29987-74PA Harley-Davidson alternator offers reliability, power, and compatibility. However, it comes at a higher cost and may be less readily available than aftermarket alternatives. Ultimately, the decision to buy this motorcycle with this specific alternator depends on the buyer's priorities, budget, and availability considerations.

Recommendation:

If the buyer values reliability, power, and compatibility and is willing to pay a premium for a Harley-Davidson part, then buying the Aermacchi SX motorcycle with the 29987-74PA alternator is a good choice. However, if cost and availability are major concerns, the buyer may want to consider purchasing an aftermarket alternator as a more affordable alternative.

Details:

Up for sale is an original new old stock complete alternator correct Harley Aermacchi 175cc 250cc SS SX model's from 1974 and early 1975. Very nice original part, ready to bolt and go!, Please feel free get in touch with any questions. This item ships worldwide.

part #: 2998774pa prices

  • $99.99-$139.89

specifications pistondon:

  • for models: Sx, Ss
  • for makes: Harley
  • brand: Harley Davidson
  • mpn: 29987-74pa
  • part type: Alternator
  • vintage part: Yes

seller pistondon:

  • rating: 99.9%
  • # reviews: 12259
  • city: Philadelphia, Pennsylvania

returns pistondon:

  • time: 30 Days
  • paid by: Seller
  • policy: Returns Accepted

general pistondon:

  • Motorcycle Scooter Parts Accessories > Engines Engine Parts > Pistons, Rings Piston Kits
  • condition: New

shipping pistondon:

  • type: Calculated
  • carrier: USPS
  • transit: 5-10 Days
  • service: USPS Ground Advantage
  • cost: $20.35
  • class: Standard

offer pistondon:

  • started: April 22, 2026
  • sold: 0
  • quantity: 1
  • availability: In Stock
  • options: Ship-to-home

payments pistondon:

  • credit card: Diners-club
  • other
  • wallet: Apple-pay
for models: sx, ss, for makes: harley, part type: alternator, vintage part: yes,
category: motorcycle parts > motorcycle scooter parts accessories > engines engine parts > pistons, rings piston kits, sku: 11973177105277632,

Harley Davidson 29987-74PA Is Similar To:

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3 offers $99.99–$139.89 USD
  • Offer #1: $135.99 price + $8.77 shipping estimate = $144.76* total.+$8.77 shipping
  • Offer #2: $99.99 price + $21.90 shipping estimate = $121.89* total. Very nice original part, ready to bolt and go!.+$21.90 shipping
  • Offer #3: $139.89 price + $18.30 shipping estimate = $158.19* total.+$18.30 shipping

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