Door sills for Nissan Sunny: a complete selection and installation guide

Nissan Sunny is a legendary car that still remains popular due to its reliability and ease of maintenance. However, even such time-tested models have vulnerabilities, and one of them is rapids. They are the first to take the hits of gravel, salt and moisture, which leads to corrosion, chipping and loss of appearance. Solution to the problem - door sills, which not only protect the body, but also give the car a more aggressive or, conversely, elegant appearance.

In this article we will look at what types of pads are suitable for Nissan Sunny (including generations B15, B16 And B17), what materials they are made from, how to choose the right size and shape, and we will also give step-by-step installation instructions. We will pay special attention to nuances that are often overlooked: compatibility with factory anti-corrosion treatment, impact on ground clearance, and even legal aspects (yes, you can be fined for some types of linings!).

If you have already encountered rust on thresholds or simply want to prevent its appearance, this article will help you save time and money by avoiding mistakes during selection and installation.

Why do you need door sill covers for Nissan Sunny?

Thresholds Nissan Sunny is not just a design element, but a critical part of the body that:

• 🛡️ Protects against mechanical damage — gravel, curbs, snow and ice constantly scratch and knock off the paint, exposing the metal.
• 💧 Prevents corrosion - even microcracks in paintwork become entry points for moisture, especially in winter, when roads are sprinkled with reagents.
• 🚗 Improves appearance — correctly selected linings mask scuffs and give the car a more modern or sporty look.
• 🔧 Simplifies repairs — if the threshold is already damaged by rust, the overlay can be a temporary solution until it is fully restored.

Protection is especially relevant for cars older than 10 years (and Sunny in Russia this is often used). For example, at Nissan Sunny B15 (1998–2006) the thresholds have a thin layer of metal and weak factory anti-corrosion treatment, which makes them vulnerable after only 3–5 years of intensive use. At the same time, overlays can increase the service life of thresholds by 50–70%, if they are installed before the first spots of rust appear.

But not everything is so simple: some types of overlays can make the situation worse, if incorrectly selected or installed. For example, plastic covers with poor ventilation allow moisture to accumulate underneath them, accelerating corrosion. Let's talk about this and other pitfalls further.

Types of door sills: which ones are suitable for Sunny?

Threshold covers are divided into several types according to material, method of fastening and design. For Nissan Sunny The following options are relevant:

Type of pads	Material	Pros	Cons	Price (per set)
Universal	Plastic, rubber, ABS	Cheap, easy to install	Poor fit, may fall off	800–2 500 ₽
For specific model	Aluminum, stainless steel, plastic	Perfect fit, durable	More expensive, more difficult to install	3 000–10 000 ₽
Sports (wide)	Carbon fiber, aluminum	Aggressive appearance, chip protection	Reduce ground clearance, may catch curbs	12 000–25 000 ₽
Anti-gravel (3D)	Polyurethane, thermoplastic	Maximum protection, flexibility	Difficult installation, high price	5 000–15 000 ₽

For Nissan Sunny B15/B16 most popular aluminum trims — they are light, do not rust and look good on classic bodies. Owners B17 are more often chosen plastic 3D overlays, as they better follow the shapes of modern design. Important: if your Sunny has factory moldings (decorative trims), they will have to be removed before installing new ones.

Separately worth mentioning illuminated overlays - they are popular among tuned cars, but require connection to an electrical outlet and may raise questions from the traffic police (if the LEDs are visible from the front or rear).

⚠️ Attention: Overlays wider than 50 mm may hit curbs when parking, especially Sunny with a low rise. Before purchasing, measure the ground clearance in the threshold area!

Lining materials: which is better for corrosion protection?

The choice of material directly affects the durability and effectiveness of protection. Let's look at the most common options:

• 🔹 Plastic (ABS, polypropylene) - light and cheap, but fragile in the cold. Suitable for temporary protection or budget tuning. Service life: 1–3 years.
• 🔹 Rubber (EPDM) - flexible, not afraid of impacts, but can crack from UV rays. Ideal for winter use.
• 🔹 Aluminum - lightweight, does not rust, but soft (scratchable). Requires anti-corrosion treatment of fasteners.
• 🔹 Stainless steel - the most durable and long-lasting option (10+ years), but heavy and expensive. Suitable for off-road use.
• 🔹 Polyurethane — elastic, resistant to chemicals and impacts. Best choice for gravel protection.

For Nissan Sunny optimal in urban environments aluminum or polyurethane linings. If the car often drives on gravel (for example, to the country), it is better to choose steel or thick plastic (thickness from 3 mm). Rubber pads are suitable for winter use, but in summer they can “float” from the heat.

Important nuance: the material of the linings must be combined with anticorrosive. For example, if the thresholds are processed Movil or liquid plastic, aluminum linings can only be glued with a special sealant (for example, 3M VHB), otherwise the reaction of the metals will lead to oxidation.

How to choose overlays by size and shape?

Incorrectly chosen overlays not only look awkward, but can also accelerate corrosion (for example, if moisture gets under them). To avoid errors, follow this algorithm:

1. Measure the length of the threshold - y Nissan Sunny B15 it is ~1,400 mm, B16/B17 — ~1,500 mm. Please note that the pads should overlap the threshold by 10–20 mm at each end.
2. Define the width:
   • 📏 Narrow (20–40 mm) - for protection against chips, almost invisible.
   • 📏 Medium (40–60 mm) — optimal balance of protection and appearance.
   • 📏 Wide (60+ mm) - for a sporty style, but can catch curbs.
3. Check the form — the linings must follow the curves of the threshold. For Sunny Only models with grooves for fastenings will fit with factory moldings.
4. Consider the mounting method:
   • 🔧 With double-sided tape - fast, but unreliable (will fall off in a year).
   • 🔧 For rivets/bolts - durable, but requires drilling.
   • 🔧 For adhesive sealant — reliable, but difficult to dismantle.

Example: for Nissan Sunny B15 2002 Overlays will fit with factory moldings "Nissan OEM Style" (art. 999T5-VN000) 50 mm wide with rivet fastening. For B17 without moldings, it is better to choose universal polyurethane linings "Hecko" (art. 1015) with an adhesive base.

⚠️ Attention: If there is already rust on the sills, before installing the trims necessarily strip it down to bare metal and process it rust converter (For example, Tsinkar). Otherwise, corrosion will continue to spread under the lining!

Measure the length and width of the thresholds|Check the availability of factory moldings|Determine the method of fastening (glue/bolts)|Check compatibility with anticorrosive|Take into account the vehicle's ground clearance-->

Step-by-step instructions for installing overlays

Installation of door sills Nissan Sunny - The process is not complicated, but requires accuracy. Below are universal instructions suitable for most types of overlays.

1. Preparation of thresholds

Wash the thresholds thoroughly with car shampoo and degrease white spirit or antisilicon. If there is rust:

1. Clean it with a metal brush or grinder.
2. Apply rust converter (For example, Hi-Gear HG5717).
3. Once dry, cover the exposed metal. primer And anti-gravel.

2. Trying on the pads

Before attaching, attach the trims to the sills and check:

• 🔍 Does the shape match (no gaps around the edges).
• 🔍 Are the drainage holes blocked?
• 🔍 Is there any contact with the wheels when turning the steering wheel?

3. Attaching the pads

The installation method depends on the type of fastening:

• 🔧 On double-sided tape:
  1. Apply tape to the overlay (for example, 3M 4950).
  2. Remove the protective film and press firmly to the threshold.
  3. Warm up with a hairdryer for better adhesion.
• 🔧 For rivets/bolts:
  1. Drill holes in the threshold (use drill 4–5 mm).
  2. Secure the cover with rivets or bolts with rubber gaskets.
  3. Treat the fasteners anticorrosive.
• 🔧 For adhesive sealant:
  1. Apply glue (eg SikaTack) on the threshold in a zigzag.
  2. Press the overlay firmly and secure with masking tape for 24 hours.

For Nissan Sunny Factory moldings may require removal. To avoid damaging the clips, use plastic puller.

What to do if the lining falls off after a month?

If the pad comes off, most likely the surface preparation technology was violated. Remove it, clean the threshold from any remaining glue (solvent 646), degrease and repeat installation with new glue. If the mount is bolted, check to see if they have come loose (especially important for Sunny with worn threads in the sills).

4. Finishing

After installation:

• Glue the joints sealant (For example, ABRO GS-1100).
• If the linings are metal, paint them in body color or apply anti-gravel film.
• Check that the pads do not catch your feet when getting into the car.

Review of popular brands and models of linings for Sunny

There are many brands on the market, but not all are suitable for Nissan Sunny. We have selected proven options taking into account the price/quality ratio:

Brand	Model	Material	Pros	Cons	Price (set)
Hecko	1015	Polyurethane	Flexible, shock resistant	Difficult to glue on curved thresholds	4 200 ₽
Nissan OEM	999T5-VN000	ABS plastic	Perfect fit, original look	Dear ones, fragile in the cold	8 500 ₽
EGR	NIS-SUN-01	Aluminum	Lightweight, do not rust	Requires anti-corrosion treatment	5 800 ₽
CarStyle	CS-NIS-14	Stainless steel	Maximum protection	Heavy, can catch curbs	12 000 ₽
3D Carbon	NIS-SUN-CF	Carbon fiber	Sporty design	Very expensive, fragile	22 000 ₽

For Sunny B15 with mileage >150 thousand km we recommend Hecko 1015 pads - they are flexible, mask small dents well and do not require drilling. For new ones B17 will fit better OEM trims from Nissan, since they do not spoil the factory appearance.

If you are looking for a budget option, pay attention to universal lining "AutoStyle" (art. AS-NS-01, ~1,800 ₽). They are made of durable plastic and are attached with tape, but they will have to be cut to the shape of the thresholds Sunny.

Legal aspects: is it possible to drive with pads?

Many owners Nissan Sunny They don’t think about the legal consequences of installing overlays, but they exist. According to Traffic rules of the Russian Federation (clause 7.18) And Technical regulations of the Customs Union, any changes to the design of the vehicle must:

• 📜 Do not compromise safety (for example, sharp edges of the pads can injure a pedestrian).
• 📜 Do not change dimensions (linings should not protrude more than 50 mm from the body).
• 📜 Do not cover the lights (relevant for backlit overlays).

In practice:

• ✅ Allowed overlays up to 50 mm wide, installed with glue or bolts.
• ⚠️ Questionable backlit covers (if the LEDs are visible from the front/back, this is equivalent to non-standard lighting devices).
• ❌ Prohibited overlays with sharp edges or protruding more than 50 mm (may be considered a design change).

In 2023, there were cases when traffic police inspectors stopped Nissan Sunny with wide metal plates and issued a fine for Part 1 Art. 12.5 Code of Administrative Offenses (500 ₽) for “inconsistency of design”. To avoid problems:

• Keep the receipt for the trims (proof that this is not a homemade design).
• Make sure the pads do not cover side lights or reflectors.
• If the pads protrude more than 30 mm, check in advance examination by the traffic police.

⚠️ Attention: If the pads are attached to bolts, drilled in the side members, this is considered a design change and requires inclusion in the title! Otherwise, in the event of an accident, the insurance company may refuse to pay.

Common mistakes and how to avoid them

Even experienced car owners make mistakes when choosing and installing overlays. Here are the most common ones and how to prevent them:

1. Buying pads "by eye"

   Many people take the first pads they come across, not taking into account that they have Sunny B15 And B17 different shapes of thresholds. Solution: Always check the compatibility chart or templates.

2. Ignoring rust

   Installing overlays on rusty sills without treatment leads to corrosion spreading underneath them. Solution: strip the rust down to metal and apply converter.

3. Wrong glue

   Double-sided tape will fall off in a month, and cheap superglue will corrode the plastic. Solution: use 3M VHB or SikaTack.

4. Closing drain holes

   This leads to moisture accumulation inside the threshold. Solution: choose perforated overlays or drill holes yourself.

5. Not taking into account ground clearance

   Wide overlays can catch curbs. Solution: measure the ground clearance in the threshold area (at Sunny it is ~140 mm).

Another common mistake is painting overlays before installation. If you are painting aluminum or steel trim, do this after installation, otherwise the paintwork may be scratched during installation. For plastic covers, use primer for plastic (For example, PlastiKote).

💡

If, after installing the linings, a whistle appears at speeds >80 km/h, check whether there are any gaps left between the lining and the sill. They can be eliminated using sealant or additional clips.

FAQ: answers to frequently asked questions

Is it possible to install overlays on rusty sills?

It is possible, but only after complete removal of rust and treatment converter (For example, Tsinkar). If you leave rust under the trim, it will continue to spread and within a year the metal will be rusted through. In advanced cases, it is better to first restore the threshold (weld, putty), and then install overlays.

Which pads are better: glued or bolted?

Depends on goals:

• 🔧 Adhesive — easier to install, do not damage the body, but are less reliable (may fall off in 1–2 years).
• 🔧 On bolts/rivets — hold tightly, but require drilling (risk of corrosion in the holes).

For Nissan Sunny with a mileage of >100 thousand km, it is better to choose a bolt-on fastening, since the glue may not stick to worn metal.

Do I need to paint the trims?

Not necessary, but preferable if:

• The trims are metal (without paint they will look cheap).
• You want them to blend in with the body (for example, the color KH3 - "dark gray metallic").

For painting use spray paint with soil (for example, Motip). Plastic linings must be treated before painting adhesive primer.

Can overlays reduce corrosion protection?

Yes, if:

• They are installed on dirty or rusty thresholds.
• Low-quality glue was used, which will peel off over time and allow moisture to pass through.
• The covers are completely sealed (no ventilation holes).

To avoid problems, choose linings with perforation and use breathable sealant (For example, Teroson MS 930).

How long will the Sunny covers last?

Service life depends on the material and operating conditions:

• 🔹 Plastic/rubber — 1–3 years (crack from frost/heat).
• 🔹 Aluminum — 5–7 years (if you don’t scratch).
• 🔹 Stainless steel — 10+ years.
• 🔹 Polyurethane — 5–8 years (the most durable option).

On Nissan Sunny in Russian conditions, the average service life of linings is 3–5 years. To prolong it, wash the thresholds in winter from reagents and treat the linings wax or anti-gravel.