---
product_id: 452289440
title: "LS Heater Core Bypass Hose Coolant Crossover with Clamps Replacement for LS1 LS2 LS3 LS6 LS7 LH6 L92 L76 L92 L76 LY2 LZ1 L99 L96 L99 L96 LC8 L96 LC8 L77 LM7 LR4 LM4 L33 LQ4 LQ9 551699"
brand: "hemrunk"
price: "€ 24.16"
currency: EUR
in_stock: true
reviews_count: 8
category: "Hemrunk"
url: https://www.desertcart.com.cy/products/452289440-ls-heater-core-bypass-hose-coolant-crossover-with-clamps-replacement
store_origin: CY
region: Cyprus
---

# High-temp resistant rubber Precision fit clamps included Dual-size hose ends (5/8" & 3/4") LS Heater Core Bypass Hose Coolant Crossover with Clamps Replacement for LS1 LS2 LS3 LS6 LS7 LH6 L92 L76 L92 L76 LY2 LZ1 L99 L96 L99 L96 LC8 L96 LC8 L77 LM7 LR4 LM4 L33 LQ4 LQ9 551699

**Brand:** hemrunk
**Price:** € 24.16
**Availability:** ✅ In Stock

## Summary

> 🔥 Upgrade your LS engine’s heartbeat with flawless coolant flow!

## Quick Answers

- **What is this?** LS Heater Core Bypass Hose Coolant Crossover with Clamps Replacement for LS1 LS2 LS3 LS6 LS7 LH6 L92 L76 L92 L76 LY2 LZ1 L99 L96 L99 L96 LC8 L96 LC8 L77 LM7 LR4 LM4 L33 LQ4 LQ9 551699 by hemrunk
- **How much does it cost?** € 24.16 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.cy](https://www.desertcart.com.cy/products/452289440-ls-heater-core-bypass-hose-coolant-crossover-with-clamps-replacement)

## Best For

- hemrunk enthusiasts

## Why This Product

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

## Key Features

- • **Precision Engineering:** Includes two clamps for a secure, leak-proof seal every time
- • **Optimized Coolant Flow:** Crossover design ensures efficient heater core bypass and engine cooling
- • **Seamless Compatibility:** Fits a wide range of LS/LT engines for effortless upgrades
- • **Durable Heat Resistance:** Premium black rubber withstands extreme engine temperatures
- • **Plug-and-Play Installation:** Direct replacement with perfect fit—no modifications needed

## Overview

The LS Heater Core Bypass Hose Coolant Crossover (Part #551699) is a durable, heat-resistant rubber hose designed for seamless compatibility with a broad range of LS and LT engines. Featuring dual-size hose ends (5/8" and 3/4") and included clamps, it ensures a secure, leak-proof fit that optimizes coolant flow by bypassing the heater core. This plug-and-play replacement part guarantees reliable performance and easy installation, making it an essential upgrade for maintaining peak engine efficiency.

## Description

Buy LS Heater Core Bypass Hose Coolant Crossover with Clamps Replacement for LS1 LS2 LS3 LS6 LS7 LH6 L92 L76 L92 L76 LY2 LZ1 L99 L96 L99 L96 LC8 L96 LC8 L77 LM7 LR4 LM4 L33 LQ4 LQ9 551699: Heater - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Good quality - Perfect fit
Review: Perfect solution. - Did exactly what it was intended to do.

## Features

- Replace Part Number: 551699
- Hose Ends: One end is 5/8" and the other end is 3/4"
- Compatible with LS1 LM7 LR4 LQ4 LS6 L59 LQ9 LM4 L33 LS2 LH6 L92 L76 LY2 LY5 LY6 LC9 LFA LH8 LMG LS3 L98 L9H L20 L94 LZ1 L99 L96 LC8 L77
- Used to loop the heater hose outlets of LS/LT engine water pump.
- Package Includeds: 1x Black Rubber Hose, 2x Clamps

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | HEMRUNK |
| Color | Black |
| Connector Type | Cross |
| Material | Rubber |
| Size | 5/8 inches, 3/4 inches |
| Thread Size | 0.95 |

## Product Details

- **Material:** Rubber
- **Brand:** HEMRUNK
- **Color:** Black
- **Connector Type:** Cross
- **Thread Size:** 0.95
- **Exterior Finish:** Brass
- **Item Weight:** 0.04 Kilograms
- **Number of Pieces:** 3
- **Manufacturer:** HEMRUNK

## Images

![LS Heater Core Bypass Hose Coolant Crossover with Clamps Replacement for LS1 LS2 LS3 LS6 LS7 LH6 L92 L76 L92 L76 LY2 LZ1 L99 L96 L99 L96 LC8 L96 LC8 L77 LM7 LR4 LM4 L33 LQ4 LQ9 551699 - Image 1](https://m.media-amazon.com/images/I/61XXeCKZpgL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good quality
*by B***N on November 17, 2025*

Perfect fit

### ⭐⭐⭐⭐⭐ Perfect solution.
*by A***R on December 29, 2025*

Did exactly what it was intended to do.

### ⭐⭐⭐⭐⭐ Fits fine good quality
*by A***R on November 1, 2025*

Fixed my overheating issue.

## Frequently Bought Together

- LS Heater Core Bypass Hose Coolant Crossover with Clamps Replacement for LS1 LS2 LS3 LS6 LS7 LH6 L92 L76 L92 L76 LY2 LZ1 L99 L96 L99 L96 LC8 L96 LC8 L77 LM7 LR4 LM4 L33 LQ4 LQ9 551699
- Steam Radiator Hose Barb Coupler Adapter 1-1/4" Hose with 1/8" NPT Steam Port for LS Swap Steam Coolant Crossover Splice Aluminum
- LS Throttle Body Bypass Hose kit LS Coolant/Steam Port Crossover Hose Kits

---

## 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.com.cy/products/452289440-ls-heater-core-bypass-hose-coolant-crossover-with-clamps-replacement](https://www.desertcart.com.cy/products/452289440-ls-heater-core-bypass-hose-coolant-crossover-with-clamps-replacement)

---

*Product available on Desertcart Cyprus*
*Store origin: CY*
*Last updated: 2026-02-22*