---
product_id: 58725086
title: "(42904) V-Twin Primary Case Oil - Engine Oil (1 Quart Bottle)"
brand: "red line"
price: "₨1533"
currency: SCR
in_stock: true
url: https://www.desertcart.sc/products/58725086-42904-v-twin-primary-case-oil-engine-oil-1-quart
store_origin: SC
region: Seychelles
---

# OEM part number 42904 - guaranteed fit & quality 75W/80W/75W80 SAE viscosity - optimal engine protection 1 Quart bottle - perfect refill size (42904) V-Twin Primary Case Oil - Engine Oil (1 Quart Bottle)

**Brand:** red line
**Price:** ₨1533
**Availability:** ✅ In Stock

## Summary

> 🛠️ Keep your V-Twin roaring with precision-engineered power!

## Quick Answers

- **What is this?** (42904) V-Twin Primary Case Oil - Engine Oil (1 Quart Bottle) by red line
- **How much does it cost?** ₨1533 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sc](https://www.desertcart.sc/products/58725086-42904-v-twin-primary-case-oil-engine-oil-1-quart)

## Best For

- red line enthusiasts

## Why This Product

- Trusted red line brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Trusted Brand Legacy:** Red Line’s reputation for high-performance lubricants means you’re riding with the best
- • **OEM Certified Quality:** Red Line’s official 42904 part ensures seamless compatibility and peak performance
- • **Perfectly Sized Refill:** 1 Quart bottle designed for hassle-free maintenance and exact dosing
- • **Engineered for V-Twin Power:** Specifically formulated to optimize your V-Twin primary case’s longevity and efficiency
- • **Precision Viscosity Control:** Engineered 75W/80W/75W80 grade for smooth, reliable power delivery

## Overview

Red Line’s (42904) V-Twin Primary Case Oil is a 1 Quart, 75W/80W/75W80 SAE-grade engine oil designed specifically for V-Twin motorcycle primary cases. It meets OEM specifications for optimal fit and performance, ensuring smooth power transfer and enhanced engine protection.

## Description

(42904) V-Twin Primary Case Oil - Engine Oil (1 Quart Bottle)

## Features

- For best performance, follow the manufacturer's recommendations in your vehicle owner’s manual.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Red Line |
| Brand | Red Line |
| Model | 42904 |
| Product Dimensions | 9.91 x 12.45 x 22.86 cm; 18 g |
| Item model number | 42904 |
| Exterior | Painted |
| Manufacturer part number | 42904 |
| OEM Part Number | 42904 |
| Special Features | 1 Quart |
| Item Weight | 18 g |
| Viscosity | 75W/80W/75W80 sae_grade |

## Product Details

- **Viscosity:** 75W/80W/75W80 sae_grade
- **Brand:** Red Line
- **Liquid volume:** 32 Fluid Ounces
- **Package information:** Bottle
- **Vehicle service type:** Motorcycle

## Images

![(42904) V-Twin Primary Case Oil - Engine Oil (1 Quart Bottle) - Image 1](https://m.media-amazon.com/images/I/71pFEcmeYZL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: What color is the fluid?**
A: The primary case fluid is amber colored.  You may be thinking about the Heavy Shockproof Transmission fluid which is pink.

**Q: Can this be used in a can am outlander atv?**
A: this is for a wet clutch where the transmission and primary do not share the same fluid

**Q: Any compatibility issues removing amsoil from primary and replacing with red line?**
A: Don't know I was running HD primary oil but I don't think there would be any issues it doesn't circulate through the engine or tranny.

**Q: What computer part on my Harley-Davidson can I put on and hook up to the computer to get in more rapid response from my throttle**
A: You need a tuner from Harley, or another maker,TTS3 , etc. and program to be able to talk to your CPU .
The connection is under my seat,it differs with year and model bike.

## Frequently Bought Together

- Red Line 42904 V-Twin Primary Case Oil, for use with UTVs, ATVs and Sportbikes - 1 Quart
- Red Line 42804 V-Twin Transmission Oil with Shockproof - 4 Quarts
- K&N Motorcycle Oil Filter: High Performance, Premium, Designed to be used with Synthetic or Conventional Oils: Fits Select Harely Davidson Motorcycles, KN-171B

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**Shop now:** [https://www.desertcart.sc/products/58725086-42904-v-twin-primary-case-oil-engine-oil-1-quart](https://www.desertcart.sc/products/58725086-42904-v-twin-primary-case-oil-engine-oil-1-quart)

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*Product available on Desertcart Seychelles*
*Store origin: SC*
*Last updated: 2026-03-10*