Royal Enfield 144752/D – Alternator (AC/DC) Cable Grommet for Bullet 350, Bullet 500, Deluxe, Machismo, Campus, Lightning 500 & Lightning 535 – Genuine Type

Royal Enfield part 144752/D is the genuine “GROMMET – ALTERNATOR (AC/DC CABLE)”, used where the alternator wiring exits the engine/primary case on classic Bullets. 144752/D – Grommet – Alternator (AC/DC Cable) under the retired models section, confirming its official description and function.

144752/D as “ALTERNATOR(AC/DC)CABL GROMMET”, a genuine factory-equivalent spare “exactly the same as the one mounted at the factory when the vehicle was new.” The Spares Company goes further, listing ALTERNATOR(AC/DC)CABL GROMMET (144752-D) with explicit fitment for: Bullet 350 (1955), Deluxe (1986), Machismo (1989), Campus (1997), Bullet 500 (2000), Lightning 500 (2000), Lightning 535 (2001).

This small but critical rubber grommet seals the alternator cable where it exits the crankcase, preventing oil seepage and cable chafing. Over time, the original grommet hardens, cracks or shrinks, causing oil leaks around the alternator wire and possible wire damage. Replacing it with the correct 144752/D keeps the harness protected and the engine looking clean and dry.

Perfect for engine rebuilds, oil-leak fixes and full restorations of CI/AVL Bullets where you want every detail, down to the last grommet, to match OEM spec.

🔴 Not for UCE/J-Series, Himalayan or 650 Twins – see confirmed fitment table below.

Key Features

• Official description: Royal Enfield catalogues and retired-model lists identify 144752/D as “Grommet – Alternator (AC/DC Cable)”.

• Genuine-spec alternator cable grommet – Bike-Parts-RE states it’s a genuine part, same as factory-fitted.

• Multi-source verified fitment for Bullet 350, Deluxe, Machismo, Campus, Bullet 500, Lightning 500 & Lightning 535 (see table).

• Made from oil-resistant rubber, designed to seal the alternator harness where it exits the engine case.

• Helps prevent oil leaks and protects the wiring from sharp case edges and vibration.

• Essential when doing stator/alternator replacement, wiring repairs or full engine overhauls.

• Correct shape and bore – no jugaad or forcing in random automotive grommets.

• Small, low-cost part that can stop annoying oil misting and dirty cases on classic Bullets.

Compatibility Table

*Years are “family” labels from dealer listings, not exact launch years.

PLEASE CHECK PART NUMBER BEFORE PURCHASE 

❌ Not Claimed / Not Guaranteed

To keep returns low, we do not guarantee direct fitment on:

• All UCE models (Classic 350/500 EFI, Bullet 350/500 UCE, Electra UCE, Thunderbird UCE)

• All J-Series (new Classic 350, new Bullet 350, Hunter 350, Meteor 350)

• Himalayan 411/450, Scram/Guerrilla 450

• 650 Twins (Interceptor, Continental GT, Super Meteor, Shotgun, Bear)

Those platforms use different cases, harness routings and grommet designs. On them, use only if your mechanic confirms matching dimensions as a custom solution.

Variants

From different sources you’ll see:

• 144752 – Alternator Cable Grommet (base number in older lists).

• 144752/D – Current revision: Grommet – Alternator (AC/DC Cable) in retired-model catalogues and Bike-Parts-RE.

• 144752/A – Referenced by OE suppliers (MG Enterprises) as an earlier/parallel pattern grommet.

On underthehood.co.in, keep a single product:

• Variant: Single Piece – 144752/D Alternator (AC/DC) Cable Grommet

You can note in the description:

“Equivalent to earlier references 144752 / 144752A where applicable – always matched to OEM alternator cable grommet size.”

FAQs

Q1. What exactly is Royal Enfield part 144752/D?
It’s the rubber grommet for the alternator (AC/DC) cable, sealing the point where the alternator harness exits the crankcase or primary cover on old-model Bullets. RE catalogues call it “Grommet – Alternator (AC/DC Cable)”.

Q2. Which Royal Enfield models are confirmed to use 144752/D?
Dealer fitment lists confirm use on Bullet 350 (Standard), Deluxe, Machismo, Campus, Bullet 500, Lightning 500 and Lightning 535 – all classic CI/AVL Bullets with AC/DC alternator layouts.

Q3. Will 144752/D fit my Classic 350 UCE or new Classic 350 (J-Series)?
There’s no microfiche or dealer evidence that 144752/D is used on UCE or J-Series engines. Their alternator covers and grommets are different, so we don not guarantee fitment. Use only if you or your mechanic have physically matched sizes and are doing a custom fix.

Q4. Why should I replace this grommet?
With age, the original grommet hardens and cracks, leading to oil seepage around the alternator wire and potential wire chafing. Replacing it during alternator/wiring work or engine rebuilds is a cheap way to prevent leaks and electrical damage.

Q5. Is 144752/D a genuine RE part or aftermarket?
144752/D as a genuine Royal Enfield part.