---
product_id: 585640336
title: "National 4278 Oil Seal Kit"
brand: "national"
price: "€ 49.71"
currency: EUR
in_stock: true
reviews_count: 5
category: "National"
url: https://www.desertcart.sk/products/585640336-national-4278-oil-seal-kit
store_origin: SK
region: Slovakia
---

# National 4278 Oil Seal Kit

**Brand:** national
**Price:** € 49.71
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** National 4278 Oil Seal Kit by national
- **How much does it cost?** € 49.71 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/585640336-national-4278-oil-seal-kit)

## Best For

- national enthusiasts

## Why This Product

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

## Description

Review: Great product - Seems like better quality than the OEM seal and worked perfect for my 2021 F150.
Review: Old Guy - Perfect fit for my ford pick up pinion seal.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000C5J0U4 |
| Brand | NATIONAL |
| Brand Name | NATIONAL |
| Container Type | Bottle |
| Country of Origin | USA |
| Customer Reviews | 4.6 out of 5 stars 198 Reviews |
| Global Trade Identification Number | 00724956125289 |
| Item Form | Oil |
| Item Weight | 0.02 Pounds |
| Liquid Volume | 946 Millilitres |
| Material | Oil |
| Material Type | Oil |
| Model Number | 4278 |
| Package Information | Bottle |
| Part Number | 4278 |
| Recommended Uses For Product | Automotive |
| SAE J300 Viscosity Grade | 10W-40 |
| Specific Uses For Product | Prevent Corrosion |
| UPC | 724956125289 |
| Unit Count | 1.0 Count |
| Viscosity | 10w-40 |

## Product Details

- **Liquid Volume:** 946 Millilitres
- **Item Weight:** 0.02 Pounds
- **Item Form:** Oil
- **Global Trade Identification Number:** 00724956125289
- **Net Quantity:** 1.0 count

## Images

![National 4278 Oil Seal Kit - Image 1](https://m.media-amazon.com/images/I/712YEXhMTvL.jpg)
![National 4278 Oil Seal Kit - Image 2](https://m.media-amazon.com/images/I/612b5B9ppDL.jpg)

## Questions & Answers

**Q: Whats the id and od for this?**
A: Thank you for your inquiry. The National Pinion Seal 4278 fits a shaft diameter of 1.812" and the seal OD is 3.096"

**Q: Does this fit a 1968 ford 8 inch? Thanks**
A: Thank you for the question.  Sorry, the National 4278 is not cataloged for this year model vehicle.  Additional vehicle information is needed. Please follow catalog listings including fitment notes to determine correct application.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great product
*by J***E on 23 April 2026*

Seems like better quality than the OEM seal and worked perfect for my 2021 F150.

### ⭐⭐⭐⭐⭐ Old Guy
*by O***Y on 14 September 2025*

Perfect fit for my ford pick up pinion seal.

### ⭐⭐⭐⭐⭐ worked as it should
*by B***D on 4 March 2026*

worked as it should. no leaks for 25k+ miles

## Frequently Bought Together

- National 4278 Differential Pinion Seal for Ford F-150
- Valvoline FlexFill Full Synthetic SAE 75W-140 Gear Oil 1 QT Pouch

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.sk/products/585640336-national-4278-oil-seal-kit](https://www.desertcart.sk/products/585640336-national-4278-oil-seal-kit)

---

*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-08-29*