Buying the HPS Blue Silicone Heater+Throttle Body Coolant+Expansion Tank Coolant Hose Kit For 98-99 BMW 323 2.5L/96-99 BMW 328 2.8L M52 E36 should be simple, so here are the facts without the marketing noise.

Hoses and fittings work under pressure and heat, where material choice decides service life. Measure inner diameter at the fitting rather than estimating by eye.
The hps blue silicone heater ships protected, because a damaged part helps nobody.
Drivers choose the hps blue silicone heater here for honest specification detail and quick dispatch.
Buyers comparing the hps blue silicone heater will find the specification detail on this page rather than in a catalog footnote.
The hps blue silicone heater listed here is checked against your vehicle before dispatch.
Every hps blue silicone heater order goes through the same fitment review.
Ordering the hps blue silicone heater takes a minute and the confirmation reaches you straight away.
What you are buying
- Engine: 2.5L
- Material: Silicone
- Finish: Blue
- Category: Hose Kits
- Price: $259.19 with free shipping over $99
- Availability: in stock, dispatched from the USA
Manufacturer specifications
HPS blue high temperature reinforced silicone hose kit replaces BMW 1996-1999 328 2.8L E36 M52 stock OEM rubber Heater, Throttle Body, Expansion Tank Coolant Hoses to prevent and fix the coolant leaking and engine over heating problem caused by cracked, damaged or collapsed OEM rubber coolant hoses. The hose kit includes 100% stainless steel non-perforated embossed hose clamps for easy installation, which do not cut through the silicone hoses.
- Material: 3-Ply Reinforced Silicone
- Color: Blue
- Replace stock oem heater, throttle body, expansion tank coolant hoses
- The premium grade high-heat resistance 3-ply reinforced silicone hoses are made with correct bends and curves to ensure a perfect fitment.
- Prevent and fix the coolant leaking and engine over heating problem caused by cracked, damaged or collapsed OEM rubber hoses. Made with correct bends and curves for perfect fitment.
- Race proven design with long lasting quality and engineered for extremely high temperature service (Max. 350F) and prolonged exposure to under-hood and coolant heat.
- Includes 100% stainless steel industrial grade embossed hose clamps which would not cut through the silicone hose.
Application:
For 1998-1999 BMW 323i 2.5L M52 Engine (E36)
For 1998-1999 BMW 323is 2.5L M52 Engine (E36)
For 1996-1999 BMW 328i 2.8L M52 Engine (E36)
For 1996-1999 BMW 328is 2.8L M52 Engine (E36)
Remark:
Installation: Silicone hose water permeation rate is 10 to 15 times greater than standard EPDM rubber hose. Checking water level regularly is highly recommended when silicone coolant hoses are used in a daily driving vehicle.
Product Content:
- 1 Set x Heater + Throttle Body Coolant + Expansion Tank Coolant Hose Kit
Hardware if Any is Shown in the Picture Above
The product does not come with manual/instruction, Professional Install Recommended
Cross Reference Number:
- 57-2138-BLUE, 572138BLUE, 57-2138
Every order gets a fitment review before dispatch, and anything doubtful gets a message rather than a shipment.
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Orders placed before early afternoon usually leave our USA warehouse the same business day, with tracking emailed at label creation.
Further reading from a neutral source: the Car Care Council maintenance tips.
Common questions
How do I know this is the right part?
We verify every doubtful order by hand. Give us the year, make, model and engine option and we will confirm compatibility in one reply.
How quickly can I get this?
Same business day dispatch applies to orders placed before the early afternoon cutoff, with tracking that updates at every carrier scan.
Is there a warranty on this?
Report any transit damage with a photo and we will send a replacement or refund you. We handle the carrier claim ourselves.
Is the part inspected before dispatch?
Lines and fittings are checked for pressure rating, inner diameter and ply count before shipping.
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