WG9000520078 HOWO Truck Front Leaf Spring Bushing

Let me cut to the chase-this WG9000520078 front leaf spring bushing is only for HOWO heavy-duty trucks. Don't even think about jamming it into a Shacman or FAW; the size won't match, and you'll end up with a squeaky suspension or a broken spring. It's a small but critical part in the front leaf spring setup-sits between the leaf spring and axle bracket, acting like a buffer.

I've fixed HOWOs for 15 years, and cheap bushings are the worst. They crack after 10,000 km, let the spring rattle so loud you can hear it over the engine, or seize up so the spring can't flex. This OEM one? It's built right: a steel outer sleeve (tough enough to handle pressure) glued to a dense rubber core. The rubber's a special mix-doesn't break down from oil, handles heat, and stays flexible. Last month, I pulled one from a HOWO T7H that hauled gravel for 3 years-rubber was still soft, no cracks, just minor wear.

The steel sleeve's drilled perfect, so it presses into the leaf spring's eye (the hole at the end) without gaps. No hammering like crazy or filing edges-slide it in, bolt it to the axle bracket, and it's solid. Aftermarket bushings? Half the time the rubber's lumpy, so the spring doesn't move right. This one distributes pressure evenly, so the truck rides smooth over bumps.

Applicable Model: HOWO heavy-duty trucks-T7H, A7, T5G, W5G for sure. Unsure? Grab your VIN (driver's side door jamb) and call a HOWO parts shop. They'll confirm in 20 seconds. -

Part Function: Cuts friction between front leaf spring and axle bracket; soaks up road vibrations; stops metal-on-metal wear. - Structural Design: Two-piece bonded-SAE 1045 carbon steel outer sleeve + EPDM rubber core (no loose parts).

Material: Outer sleeve: SAE 1045 carbon steel (wears slow); Rubber core: EPDM (oil-resistant, handles -40°C to +120°C). - Dimensions: Outer diameter 50mm, inner diameter 25mm, length 45mm-exact match for HOWO's leaf spring eye.

Hardness: Rubber core 65±5 Shore A (flexible enough to absorb bumps, strong enough to hold weight).

Maximum Compression Load: 80 kN (handles heavy loads without squishing permanently).

Oil Resistance: Doesn't swell or get hard when it touches engine oil or road grime.

Mounting Type: Press-fit into leaf spring eye; secured with M20 axle bolts.

Certifications: HOWO OEM stamp, plus ISO 9001 and GB/T 5764-2011 (leaf spring bushing standards). No fakes here.

Rubber lasts 3x longer: That EPDM rubber doesn't dry out or crack like cheap natural rubber. A logistics fleet I work with gets 80,000+ km out of these-aftermarket ones only make it 25,000 km.

No rattles or seizing: Precision steel sleeve and even rubber mean no gaps. The spring moves smooth, no clunking. Even trucks that sit idle in winter don't seize up.

Smoother ride: 65 Shore A rubber soaks up bumps, so less vibration hits the cab. Drivers say long hauls on gravel roads are way less jarring.

Installs fast, no guesswork: Presses into the spring eye easy-no reaming holes or trimming rubber. Two guys can swap a set in 45 minutes, half the time of aftermarket bushings.

Saves money on big parts: Stops metal-on-metal wear, so the leaf spring and axle bracket last longer. I've seen fleets avoid $500 spring replacements just by using OEM bushings.

This bushing's only for HOWO heavy-duty trucks-here's who needs it most:

HOWO T7H/T5G long-haul drivers: Highway miles mean steady vibration-this bushing keeps the suspension quiet and smooth.

-HOWO A7 construction truck operators: Hauling heavy loads over rough terrain? It resists wear from constant flexing and dirt.

HOWO W5G delivery folks: Frequent stops mean more spring movement-this bushing won't crack from repeated squeezing. Use it when:

Routine maintenance: Swap every 60,000–80,000 km (sooner if you see wear) during suspension checks. - **Fixing noise**: If the front end rattles over bumps, worn bushings are usually the problem-swap 'em to quiet it down.

Replacing leaf springs: Always put new bushings in with a new spring. Old ones don't fit right and ruin the new spring fast.

Fleet upkeep: Logistics or construction companies with HOWOs-standardize on these to avoid random breakdowns. Heads up: Doesn't fit non-HOWO trucks or HOWOs with modified leaf springs. Even a 1mm difference in spring eye size causes trouble-check first.

Q1: Will this fit my 2019 HOWO T7H 6x4?

A1: Yep, 2019 T7H 6x4 is a perfect match. For 100% sure, give the parts shop your VIN-they'll cross-check with HOWO's list.

Q2: How do I know my bushings are bad?

A2: 4 easy signs: 1. Rattling or clunking from the front when hitting bumps. 2. Rubber looks cracked, split, or rock-hard (check when rotating tires). 3. Truck pulls to one side-stiff bushings make the spring move unevenly. 4. Wear on the leaf spring eye or axle bracket-metal contact means bushings are shot.

Q3: Can I reuse old bushings with a new leaf spring?

A3: Don't. Old bushings stretch or harden-they won't fit the new spring right. This causes uneven wear, noise, and can break the new spring. Not worth saving a few bucks.

Q4: Why not buy cheap aftermarket bushings?

A4: I've seen 'em fail in 15,000 km. They use bad rubber that cracks in cold weather or swells in oil. Then you're stuck replacing the leaf spring too-costs 10x more than the OEM bushing.

Q5: Do I need special tools to install?

A5: A press tool (or big C-clamp) helps push it in evenly-hammering bends the steel sleeve. Grab gloves and a wire brush to clean the spring eye first. No fancy gear, but rushing misaligns it.

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